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Molecules, Volume 6, Issue 12 (December 2001), Pages 927-1067, Articles M232-M275

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Research

Jump to: Review, Other

Open AccessArticle An Improved Synthesis of 5-(2,6-Dichlorophenyl)-2-(phenylthio)-6H-pyrimido[1,6-b]pyridazin-6-one (a VX-745 analog)
Molecules 2001, 6(12), 959-963; doi:10.3390/61200959
Received: 22 October 2001 / Revised: 30 October 2001 / Accepted: 30 October 2001 / Published: 30 November 2001
Cited by 3 | PDF Full-text (27 KB) | HTML Full-text | XML Full-text
Abstract
An improved procedure for the synthesis an analog of the p38 inhibitor compound VX- 745 is reported. Full article
Open AccessArticle Zn Mediated Regioselective Barbier Reaction of Propargylic Bromides in THF/aq. NH4Cl Solution
Molecules 2001, 6(12), 964-968; doi:10.3390/61200964
Received: 9 January 2001 / Revised: 31 October 2001 / Accepted: 31 October 2001 / Published: 30 November 2001
Cited by 16 | PDF Full-text (61 KB) | HTML Full-text | XML Full-text
Abstract
The reaction of substituted and unsubstituted propargylic bromides with butanal in presence of zinc power in THF/saturated aqueous NH4Cl solution gave corresponding allenic and propargylic alcohols with high selectivity. Full article
Open AccessArticle Regioselectivity in the Thermal Rearrangement of Unsymmetrical 4-Methyl-4H-1,2,4-triazoles to 1-Methyl-1H-1,2,4-triazoles
Molecules 2001, 6(12), 969-978; doi:10.3390/61200969
Received: 14 March 2001 / Revised: 26 October 2001 / Accepted: 26 October 2001 / Published: 30 November 2001
Cited by 6 | PDF Full-text (51 KB) | HTML Full-text | XML Full-text
Abstract
The rearrangement of 4-methyl-3,5-diaryl-4H-1,2,4-triazoles to the corresponding 1-methyl-3,5-diaryl-1H-1,2,4-triazoles showed regioselectivity comparable to that observed for the alkylation of 3,5-diaryl-1H-1,2,4-triazoles. This lends support to a proposed mechanism for the rearrangement that involves consecutive nucleophilic displacements steps. Full article
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Open AccessArticle Synthesis of Novel Diammonium Gemini Surfactants
Molecules 2001, 6(12), 979-987; doi:10.3390/61200979
Received: 10 May 2001 / Revised: 26 October 2001 / Accepted: 26 October 2001 / Published: 30 November 2001
Cited by 16 | PDF Full-text (49 KB) | HTML Full-text | XML Full-text
Abstract
Selective synthesis of linear and gemini quaternary ammonium surfactants was accomplished by reacting the corresponding alkyl alcohols with 2-chloro-N,N-dimethylethylamine under basic conditions. The amines were quaternized with methyl chloride or methyl iodide. Full article
Open AccessArticle Novel Chiral Switching Ligands for Enantioselective Asymmetric Reductions of Prochiral Ketones
Molecules 2001, 6(12), 988-995; doi:10.3390/61200988
Received: 4 May 2001 / Revised: 1 November 2001 / Accepted: 5 November 2001 / Published: 30 November 2001
Cited by 10 | PDF Full-text (49 KB) | HTML Full-text | XML Full-text
Abstract
The newly developed chiral ligands 1 and 4 show opposite enantioselectivity in the asymmetric reduction of prochiral ketones resulting in the production of either enantiomer depending on the metal complex with high enantiomeric excess. Full article
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Open AccessArticle Bi(TFA)3 and Bi(OTf)3 Catalyzed Conversions of Epoxides to Thiiranes with Ammonium Thiocyanate and Thiourea under Non-Aqueous Conditions
Molecules 2001, 6(12), 996-1000; doi:10.3390/61200996
Received: 30 July 2001 / Revised: 10 October 2001 / Accepted: 23 October 2001 / Published: 30 November 2001
Cited by 20 | PDF Full-text (25 KB) | HTML Full-text | XML Full-text
Abstract
Various epoxides are converted to their corresponding thiiranes in excellent yields with ammonium thiocyanate and thiourea under non-aqueous conditions in the presence of catalytic amounts of Bi(TFA)3 and Bi(OTf)3. Full article
Open AccessArticle Facile Synthesis of 1,6-Bis(2-furyl)-2,5-bis(2-hydroxy-3-formyl-5-methylbenzyl)-2,5-diazahexane: a New Dinucleating Ligand
Molecules 2001, 6(12), 1001-1005; doi:10.3390/61201001
Received: 15 April 2001 / Revised: 29 October 2001 / Accepted: 30 October 2001 / Published: 30 November 2001
Cited by 6 | PDF Full-text (117 KB) | HTML Full-text | XML Full-text
Abstract
A convenient three-step preparation of the dinucleating ligand, 1,6-bis(2-furyl)-2,5-bis(2-hydroxy-3-formyl-5-methylbenzyl)-2,5-diazahexane (3) starting from 2,6-bis(hydroxymethyl)-4-methylphenol (4) is reported. Compound 4 was partially oxidized with preactivated manganese dioxide to form compound 5, which was converted to 2-hydroxy-3-chloromethyl-5-ethylbenzaldehyde (6) with conc.HCl/EtOH. Compound 6 in turn reacted with
[...] Read more.
A convenient three-step preparation of the dinucleating ligand, 1,6-bis(2-furyl)-2,5-bis(2-hydroxy-3-formyl-5-methylbenzyl)-2,5-diazahexane (3) starting from 2,6-bis(hydroxymethyl)-4-methylphenol (4) is reported. Compound 4 was partially oxidized with preactivated manganese dioxide to form compound 5, which was converted to 2-hydroxy-3-chloromethyl-5-ethylbenzaldehyde (6) with conc.HCl/EtOH. Compound 6 in turn reacted with N,N’-bis (2-furyl)-1,2-diaminoethane (7) in the presence of K2CO3 in ethanol to give the title compound 3. No protecting groups were required in the whole process and the conditions were mild. Full article
Open AccessArticle Efficient Deprotection of Phenol Methoxymethyl Ethers Using a Solid Acid Catalyst with Wells-Dawson Structure
Molecules 2001, 6(12), 1006-1011; doi:10.3390/61201006
Received: 27 October 2001 / Accepted: 2 November 2001 / Published: 30 November 2001
Cited by 18 | PDF Full-text (29 KB) | HTML Full-text | XML Full-text
Abstract
Deprotection of various phenols from their respective methoxymethyl ethers using an heteropolyacid catalyst was studied. The catalyst was the Wells-Dawson heteropolyacid, used both in bulk or supported on silica. Yields were high to quantitative after less than one hour reaction time and the
[...] Read more.
Deprotection of various phenols from their respective methoxymethyl ethers using an heteropolyacid catalyst was studied. The catalyst was the Wells-Dawson heteropolyacid, used both in bulk or supported on silica. Yields were high to quantitative after less than one hour reaction time and the catalyst was easily recoverable and reusable. Full article
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Review

Jump to: Research, Other

Open AccessReview Some Heteroaromatic Organomercurials, Their Syntheses and Reactions: A Review of Our Research (1980-2000)
Molecules 2001, 6(12), 927-958; doi:10.3390/61200927
Received: 1 October 2001 / Accepted: 24 October 2001 / Published: 30 November 2001
Cited by 2 | PDF Full-text (223 KB) | HTML Full-text | XML Full-text
Abstract
This review reports some novel (or improved) synthetic methods for preparing a number of aromatic (carbocyclic and predominantly heterocyclic) organomercurials, particularly those derived from theophylline, theobromine and uracil, as well as some novel halo- and cyano-demercuration reactions. We have also synthesized the
[...] Read more.
This review reports some novel (or improved) synthetic methods for preparing a number of aromatic (carbocyclic and predominantly heterocyclic) organomercurials, particularly those derived from theophylline, theobromine and uracil, as well as some novel halo- and cyano-demercuration reactions. We have also synthesized the first stable organic derivative of mercury(I), viz. 1,8-bis(acetoxydimercurio) theobromine, and studied its novel reactions. We have also improved the old Willgerodt method (1897), applicable for preparing various diaryliodonium chlorides from appropriate (dichloroiodo)arenes and symmetric aromatic mercurials. A full list of our works, published over the past twenty years (1980-2000), is also provided (see Refs. 1-16). Full article
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Other

Jump to: Research, Review

Open AccessShort Note Bis(N,N-dibutylthiocarbamoyl) Disulfide
Molecules 2001, 6(12), M232; doi:10.3390/M232
Received: 21 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (120 KB) | Supplementary Files
Abstract
This experiment is performed according to literature method [1-3].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Bis[(3,5-dimethyl pyrazol)-1-yl Thiocarbonyl)] Disulfide
Molecules 2001, 6(12), M233; doi:10.3390/M233
Received: 22 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (120 KB) | Supplementary Files
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Bis[(3-methoxycarbonyl-5-methyl pyrazol)-1-yl Thiocarbonyl] Disulfide
Molecules 2001, 6(12), M234; doi:10.3390/M234
Received: 22 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
Cited by 1 | PDF Full-text (126 KB) | Supplementary Files
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Bis[(3-hydroxymethyl-5-methyl pyrazol)-1-yl Thiocarbonyl] Disulfide
Molecules 2001, 6(12), M235; doi:10.3390/M235
Received: 22 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (122 KB) | Supplementary Files
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note ar-Himachalene
Molecules 2001, 6(12), M236; doi:10.3390/M236
Received: 16 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
Cited by 3 | PDF Full-text (90 KB) | Supplementary Files
Abstract
The reaction of dehydrogenation on the natural mixture of himachalene is already known [1].[...] Full article
Open AccessShort Note 9-Methyl-3-phenyl-4H,6H--[1,2,4]triazino[5,4-b][1,3,4]thiadiazin-6-one
Molecules 2001, 6(12), M237; doi:10.3390/M237
Received: 17 December 2000 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (126 KB) | Supplementary Files
Abstract
4-Amino-6-methyl-5-thio-1,2,4-triazin-3-one 1 was reacted with phenacyl bromide in the presence of triethylamine in acetonitrile to give the corresponding 5-phenacylthio derivative 2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 3-Amino-9-methyl-2H,6H--[1,2,4]triazino[5,4-b][1,3,4]thiadiazin-6-one
Molecules 2001, 6(12), M238; doi:10.3390/M238
Received: 17 December 2000 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (122 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Condensation of 4-amino-6-methyl-5-thio-1,2,4-triazin-3-one 1 with chloro acetonitrile in the presence of triethey amine afforded the corresponding 5-thiocyanomethyl derivative 2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4,7,7-Trimethyl-bicyclo [2.2.1]heptan-2-ol
Molecules 2001, 6(12), M239; doi:10.3390/M239
Received: 10 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (113 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A mixture of Pd(acac)2 (41.26 mg, 0.12 mmol) and CuCl2 (168 mg, 1.25 mmol) [1] in 10 mL of 1,2-dimethoxyethan (DME) was stirred for 30 mn at 80°C under oxygen atmosphere, was added a -pinene (425 mg, 3.12 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Trans Acetic Acid 5-isopropyl-2-methyl Cyclohex-2-enyl Ester (Trans Carvyl Acetate)
Molecules 2001, 6(12), M240; doi:10.3390/M240
Received: 10 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (118 KB) | Supplementary Files
Abstract
To a red solution of Li2PdCl4, prepared in situ by mixing LiCl (30.8 mg, 0.72 mmol) and PdCl2 (43 mg, 0.24 mmol) in 20 mL of AcOH stirred at 85°C, was added Cu(OAc)2 (4 g, 20 mmol) and stirred for 30 mn.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 3,5-Bis(trimethylsilyl)-4-chloropyridine
Molecules 2001, 6(12), M241; doi:10.3390/M241
Received: 8 June 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
PDF Full-text (101 KB) | Supplementary Files
Abstract
In connection with our studies of the nonlinear optical properties of pyridinylidene compounds we required some pyridine derivatives bearing bulky substituents at the 3- and 5-positions in addition to having an efficient leaving group at the 4-position.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note [3,5-Bis(trimethylsilyl)-1-methyl-4(1H)-pyridinylidene]-dicyanomethane
Molecules 2001, 6(12), M242; doi:10.3390/M242
Received: 8 June 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
PDF Full-text (105 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
3,5-Bis(trimethylsilyl)-1-methyl-4-thiophenoxypyridinium iodide reacts with the anion of malononitrile to give the corresponding dicyanomethylidene-1,4-dihydropyridine.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 3-Ethoxycarbonyl-1,4-dihydro-2-methylquinoline
Molecules 2001, 6(12), M243; doi:10.3390/M243
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
PDF Full-text (137 KB) | Supplementary Files
Abstract
Compound 1 [1] (1.23 g, 4.94 mmol ) and 0.1 g of Pd/C (10%) in 50 ml of ethanol are introduced into an hydrogenation reactor.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-(Benzylthio)acetophenone
Molecules 2001, 6(12), M244; doi:10.3390/M244
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
PDF Full-text (93 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
During the course of our research on preparing parallel dipole-aligned crystals [1-2], we needed to prepare the previously unreported compound 4-benzyl-sulfonylacetophenone.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-Ferrocenylbenzoic Acid
Molecules 2001, 6(12), M246; doi:10.3390/M246
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
Cited by 13 | PDF Full-text (115 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Ferrocene-containing liquid crystals, non-linear optical materials and magnetic materials are of considerable interests for their high thermal stability, tunable redox characteristics and structural variability [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-Formylphenyl 4-Ferrocenylbenzoate
Molecules 2001, 6(12), M247; doi:10.3390/M247
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
Cited by 2 | PDF Full-text (123 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Ferrocene unit is comparatively large volume and it needs a longer molecular shape in geometry in to support the liquid crystal property [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-Hydroxyphenyl 4-Ferrocenylbenzoate
Molecules 2001, 6(12), M248; doi:10.3390/M248
Received: 12 May 2001 / Accepted: 15 May 2001 / Published: 25 May 2001
PDF Full-text (125 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The reaction of 4-ferrocenylbenzoyl chloride with 1,4-dihydroxybenzene gives 4-hydroxyphenyl 4-ferrocenylbenzoate, which contains a free hydroxyl group and it can be used for the synthesis of ester mono-substituted liquid crystal and hydrogen-bonded supra-molecular liquid crystals [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-Nitrophenylferrocene
Molecules 2001, 6(12), M249; doi:10.3390/M249
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
Cited by 12 | PDF Full-text (114 KB) | Supplementary Files
Abstract
4-Nitrophenylferrocene is a candidate for the study of second order non-linear optical materials containing electron donating and electron withdrawing groups in the molecule.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 4-Ferrocenylaniline
Molecules 2001, 6(12), M250; doi:10.3390/M250
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
Cited by 12 | PDF Full-text (110 KB) | Supplementary Files
Abstract
The reduction of 4-nitropheneylferrocene with tin in acidic condition gives 4-ferrocenylaniline, which is an important intermediate for the synthesis of ferrocene-containing Schiff's base liquid crystals [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note (4-hydroxybenzylidene)-4-ferrocenylaniline
Molecules 2001, 6(12), M251; doi:10.3390/M251
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
Cited by 6 | PDF Full-text (117 KB) | Supplementary Files
Abstract
(4-Hydroxybenzylidene)-4-ferrocenylaniline has a free hydroxyl group and it can react with carboxylic acids to form esters and it is thus a key intermediate for the synthesis of mono-substituted ferrocenecontaining liquid crystal [1] with Schiff's base and ester group.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note (4-Formylbenzylidene)-4-ferrocenylaniline
Molecules 2001, 6(12), M252; doi:10.3390/M252
Received: 28 May 2001 / Accepted: 14 December 2001 / Published: 20 December 2001
PDF Full-text (123 KB) | Supplementary Files
Abstract
The reaction of 4-ferrocenylaniline with 1,4-benzenedicarboxaldehyde in an equimolar ratio in dilute solution, or with a large excess of the aniline, often gives the diimine product.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Reduction of 5-Nitrosalicylic Acid in Water to Give 5-Amino-salicylic Acid*
Molecules 2001, 6(12), M260; doi:10.3390/M260
Received: 28 May 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (107 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
In the course of a general programme aimed to find new protocols for environmentally friend chemistry [1-3] we were looking for a clean, high yielding method of reduction of 5-nitrosalicylic acid (1) to 5-aminosalicylic acid (5-ASA) in industrial scale [4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Figures

Scheme 1

Open AccessShort Note 4-(3-Nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molecules 2001, 6(12), M261; doi:10.3390/M261
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (122 KB) | Supplementary Files
Abstract
To a cold solution of 5-trifluoromethyl-2,4-dihydropyrazol-3-one [1,2] (0.76 g, 5 mmol) in ethanol (25 ml) containing sodium acetate (0.82 g, 10 mol), 3-nitrobenzenediazonium chloride ( 5 mmol) was added dropwise with stirring at 0-5°C.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 2-(2`,3`,5`-Tri-O-acetyl-b-D-ribofuranosyl)-4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molecules 2001, 6(12), M262; doi:10.3390/M262
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (163 KB) | Supplementary Files
Abstract
To a solution of 4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one 1 [1] (0.903 g, 3 mmol) in hexamethyldisilazine (HMDS) (25 ml) was added few crystals of anhydrous ammonium sulfate [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 2-(b-D-Ribofuranosyl)-4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydro-pyrazol-3-one
Molecules 2001, 6(12), M263; doi:10.3390/M263
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 2 | PDF Full-text (141 KB) | Supplementary Files
Abstract
The desired compound 2 was obtained by complete deprotection of the acetylated nucleoside 1 [1] using triethylamine [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 6-Amino-1-(2’-deoxy-b-D-ribofuranosyl)-4,5-dihydro-8H-imidazo[4,5-e][1,3]diazepine-4,8-dione
Molecules 2001, 6(12), M264; doi:10.3390/M264
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (132 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The starting methyl 1-(2’-deoxy-b-D-ribofuranosyl)imidazole-4,5-dicarboxylate (1) was prepared by deoxygenation of the corresponding riboside, employing the literature procedure [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 3,5-Bis(trimethylsilyl)-1-methyl-4-thiophenoxypyridinium Iodide
Molecules 2001, 6(12), M265; doi:10.3390/M265
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (103 KB) | Supplementary Files
Abstract
3,5-Bis(trimethylsilyl)-4-thiophenoxypyridine is readily converted to its pyridinium methiodide.[...] Full article
Open AccessShort Note 3,5-Bis(trimethylsilyl)-4-thiophenoxypyridine
Molecules 2001, 6(12), M266; doi:10.3390/M266
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (100 KB) | Supplementary Files
Abstract
Reaction of 3,5-bis(trimethylsilyl)-4-chloropyridine [1] with thiophenol gave 3,5-bis(trimethylsilyl)-4-thiophenoxypyridine, a potential precursor to novel pyridinylidene derived nonlinear optical materials.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 3-(4’-Methyl-3’-oxocyclohex-1’-enyl)butyric Acid Methyl Ester
Molecules 2001, 6(12), M267; doi:10.3390/M267
Received: 14 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (140 KB) | Supplementary Files
Abstract
The alkoxycarbonylation of terpenic olefins which affords the corresponding esters is an elegant synthesis [1-2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note (4-Isopropenyl-cyclohex-1-enyl)acetic Acid Ethylester
Molecules 2001, 6(12), M268; doi:10.3390/M268
Received: 14 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | HTML Full-text | XML Full-text
Abstract
The carbonylation of allylic componds catalyzed by transition metal complexes under atmospheric pressure of CO is one of the most attractive tools to synthesize the b ,g - unsaturated carbonyl compounds, which are versatile building blocks [1-2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 2-Cinnamyl-1,3-oxazole-4-carboxaldehyde p-Toluenesulfonyl Hydrazone
Molecules 2001, 6(12), M269; doi:10.3390/M269
Received: 27 October 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (90 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To a stirred solution of p-toluenesulfonhydrazide (0.61g, 3.3 mmol) in methanol/water (6:4, 20 ml) at 60°C was added 2-cinnamyl-1,3-oxazole-4-carboxaldehyde [1](0.50 g, 2.5 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 2-(2'-Cinnamyl-1',3'-oxazolyl)-1,3-dithiolane
Molecules 2001, 6(12), M270; doi:10.3390/M270
Received: 27 October 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (85 KB) | Supplementary Files
Abstract
To a mixture of 2-cinnamyl-1,3-oxazole-4-carboxaldehyde [1,2] (2.8 g, 14 mmol) and ethanedithiol (2.3 g, 21 mmol) in methylene chloride (100 ml) was added boron trifluoride etherate (2.8 g, 21 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 6-Methyl-1,3-diphenylpyrazolo[3,4-d]oxazin-4-one
Molecules 2001, 6(12), M271; doi:10.3390/M271
Received: 18 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (114 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
b-Pyrazolic amino acid [1] (2 mmoles) was dissolved in acetic anhydride [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 5-Methyl-1,3-diphenylpyrazolo[4,3-d]oxazin-7-one
Molecules 2001, 6(12), M272; doi:10.3390/M272
Received: 18 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (114 KB) | Supplementary Files
Abstract
In a similar manner to the reported procedure [1,2], b-pyrazolic amino acid [3] (2 mmoles) was dissolved in acetic anhydride.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note 5-Phenyl-3-[1-(phenylsulphonyl)-hexyl]-1,2,4-triazine
Molecules 2001, 6(12), M273; doi:10.3390/M273
Received: 20 November 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (91 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
As part of ongoing research programme we synthesised the title compound as valuable intermediate for intermolecular cycloaddition reactions, leading to biologically active heterocycles.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note (4aS,6R,8aS)-4a,5,9,10,11,12-Hexahydro-6H-benzofuro[3a,3,2-ef][2]benzazepine-3,6-diol (Norsanguinine)
Molecules 2001, 6(12), M274; doi:10.3390/M274
Received: 1 December 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (97 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Norsanguinine (2) is an alkaloid isolated from the bulbs of L. sanguinea [1] and synthesized as racemate by Kita [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note Tetraethyl(pyrrolidine-2,2-diyl)bisphosphonate
Molecules 2001, 6(12), M275; doi:10.3390/M275
Received: 1 December 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (112 KB) | Supplementary Files
Abstract
The synthesis of the title compound is already described [1, 2] and we report here the fully optimized procedure.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessNew Book Received Asymmetric Catalysis In Organic Synthesis
Molecules 2001, 6(12), 1012; doi:10.3390/61201012
Received: 2 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Catalytic Asymmetric Synthesis, 2nd Edition
Molecules 2001, 6(12), 1013-1014; doi:10.3390/61201013
Received: 2 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Advanced Organic Chemistry. Part B: Reactions and Synthesis. Fourth Edition
Molecules 2001, 6(12), 1015-1016; doi:10.3390/61201015
Received: 2 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Molecular Switches
Molecules 2001, 6(12), 1017-1018; doi:10.3390/61201017
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received The Biotechnology of Ethanol: Classical and Future Applications
Molecules 2001, 6(12), 1019-1020; doi:10.3390/61201019
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Marketing and Sales in the Chemical Industry
Molecules 2001, 6(12), 1021; doi:10.3390/61201021
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received New Trends in Synthetic Medicinal Chemistry. (Methods and Principles in Medicinal Chemistry, Volume 7)
Molecules 2001, 6(12), 1022-1029; doi:10.3390/61201022
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Perspectives in Nucleoside and Nucleic Acid Chemistry
Molecules 2001, 6(12), 1030-1033; doi:10.3390/61201030
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Chemistry for the 21st Century
Molecules 2001, 6(12), 1034-1040; doi:10.3390/61201034
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received The Structure of the Nucleon
Molecules 2001, 6(12), 1041-1043; doi:10.3390/61201041
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Industrial Biotransformations
Molecules 2001, 6(12), 1044-1046; doi:10.3390/61201044
Received: 1 November 2001 / Published: 31 December 2001
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Open AccessNew Book Received Organic Synthesis on Solid Phase. (Supports, Linkers, Reactions)
Molecules 2001, 6(12), 1047-1054; doi:10.3390/61201047
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Liquid Crystals :Experimental Study of Physical Properties and Phase Transitions
Molecules 2001, 6(12), 1055-1056; doi:10.3390/61201055
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Shape and Structure, from Engineering to Nature
Molecules 2001, 6(12), 1057-1058; doi:10.3390/61201057
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Statistics in Genetics and in the Environmental Sciences. (Trends in Mathematics)
Molecules 2001, 6(12), 1059; doi:10.3390/61201059
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Progress in Drug Research
Molecules 2001, 6(12), 1060; doi:10.3390/61201060
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Antiviral Agents: Advances and Problems. Progress in Drug Research
Molecules 2001, 6(12), 1061-1062; doi:10.3390/61201061
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Recombinant Protein Drugs.( Milestones in Drug Therapy)
Molecules 2001, 6(12), 1063; doi:10.3390/61201063
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received March's Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 5th Edition
Molecules 2001, 6(12), 1064-1065; doi:10.3390/61201064
Received: 1 December 2001 / Published: 31 December 2001
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Open AccessNew Book Received Grundlagen der Life Sciences: Chemie - Biologie - Energetik
Molecules 2001, 6(12), 1066-1067; doi:10.3390/61201066
Received: 1 December 2001 / Published: 31 December 2001
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