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Molbank, Volume 2002, Issue 1 (December 2002)

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Open AccessShort Note (E)-2-[2-(4'-Methyl-[2,2']bipyridinyl-4-yl)-vinyl]-[1,4]benzoquinone
Molbank 2002, 2002(1), M276; doi:10.3390/M276
Received: 8 January 2002 / Accepted: 17 January 2002 / Published: 16 February 2003
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Abstract
Lehn et al. [1] have reported the synthesis of a compound similar to 2, which has a saturated ethano bridged between the 2,2'-bipyridine and the para-benzoquinone moiety.[...] Full article
Open AccessShort Note Chiral Methyl 7,8,9-Trichloro-6,7,8,9-tetrahydro-5-oxopyrido-[2,3-a]indolizine-10-carboxylates (OPIC)
Molbank 2002, 2002(1), M277; doi:10.3390/M277
Received: 19 April 2002 / Accepted: 4 May 2002 / Published: 16 February 2003
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Abstract
The 3,3'-dihydoxycarbonyl-2,2'-bipyridine acid 1 used for the preparation of diastereoisomeric compounds 2a-b has been obtained by described method of Blau [1].[...] Full article
Open AccessShort Note 2-(1,3-Benzodioxol-5-yl)ethylene-1,1,2-tricarbonitrile
Molbank 2002, 2002(1), M278; doi:10.3390/M278
Received: 16 January 2002 / Revised: 15 March 2002 / Accepted: 15 May 2002 / Published: 16 February 2003
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Abstract
2-(1,3-benzodioxol-5-yl)ethylene-1,1,2-tricarbonitrile (2), was prepared from (1,3-benzodioxol- 5-ylmethylene)malononitrile (1) and sodium cyanide, followed by oxidation using bromine [1,2].[...] Full article
Open AccessShort Note 2-[(2-Isopropyl-5-methylphenoxy)acetyl]-N-phenylhydrazine Carbothioamide
Molbank 2002, 2002(1), M279; doi:10.3390/M279
Received: 16 January 2002 / Revised: 15 March 2002 / Accepted: 15 May 2002 / Published: 16 February 2003
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Abstract
The phenylthiosemicarbazide derivative 3 was prepared from 2-isopropyl-5-methylphenoxyacyl hydrazide (1) and phenyl isothiocyanate (2) [1,2].[...] Full article
Open AccessShort Note 5-[(2-Isopropyl-5-methylphenoxy)methyl]-4-phenyl-4H-1,2,4-triazole-3-thiol
Molbank 2002, 2002(1), M280; doi:10.3390/M280
Received: 16 January 2002 / Revised: 15 March 2002 / Accepted: 15 May 2002 / Published: 16 February 2003
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Abstract
The triazole derivative 2 was prepared from 2-[(2-isopropyl-5-methylphenoxy)acetyl]-N-phenylhydrazine carbothioamide (1) by heating under reflux with aqueous NaOH [1,2].[...] Full article
Open AccessShort Note (2Z)-3-(3,4-Dimethoxyphenyl)-2-(4-methylphenyl)acrylonitrile
Molbank 2002, 2002(1), M281; doi:10.3390/M281
Received: 16 January 2002 / Revised: 15 March 2002 / Accepted: 15 May 2002 / Published: 16 February 2003
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Abstract
(2Z)-3-(3,4-dimethoxyphenyl)-2-(4-methylphenyl)acrylonitrile (3) was prepared by Knoevenagel condensation of 3,4-dimethoxybenzaldehyde (1) and 4-methylphenylacetonitrile (2) in ethanol using KOH as a base [1,2].[...] Full article
Open AccessShort Note (1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(4,5-diphenylimidazol-2-yl)benzene
Molbank 2002, 2002(1), M282; doi:10.3390/M282
Received: 2 April 2002 / Accepted: 16 May 2002 / Published: 20 February 2003
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Abstract
2-(3-Formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
Open AccessShort Note 1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(acenaphthro[4,5-d]imidazol-2-yl)benzene
Molbank 2002, 2002(1), M283; doi:10.3390/M283
Received: 2 April 2002 / Accepted: 16 May 2002 / Published: 20 February 2003
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Abstract
2-(3-formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
Open AccessShort Note 1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(phenanthro[5,6-d]imidazol-2-yl)benzene
Molbank 2002, 2002(1), M284; doi:10.3390/M284
Received: 2 April 2002 / Accepted: 16 May 2002 / Published: 20 February 2003
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Abstract
2-(3-Formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
Open AccessShort Note 2-(2-Hydroxy-5-methyl-3-formylphenyl)-imidazo[4,5-f][1,10]-phenanthroline
Molbank 2002, 2002(1), M285; doi:10.3390/M285
Received: 2 April 2002 / Accepted: 16 May 2002 / Published: 20 February 2003
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Abstract
1,10-phenanthroline-5,6-dione was prepared by a previously published method [1].[...] Full article
Open AccessShort Note 2’-(3’’,4’’-Methylenedioxyphenyl)imidazo[4’,5’-f]1,10-phenanthroline
Molbank 2002, 2002(1), M286; doi:10.3390/M286
Received: 25 April 2002 / Accepted: 29 May 2002 / Published: 20 February 2003
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Abstract
1,10-Phenanthroline-5,6-dione was prepared by a previously published procedure [1].[...] Full article
Open AccessShort Note Ethyl 3-Chloropyrazine-2-carboxylate
Molbank 2002, 2002(1), M287; doi:10.3390/M287
Received: 14 May 2002 / Accepted: 29 May 2002 / Published: 20 February 2003
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Abstract
Free-radical alkoxycarbonylation of protonated pi-deficient hetarenes is a useful method for the introduction of ester functionalities into such systems [1], especially when the reaction is carried out in a two-phase solvent system in order to suppress polysubstitution [2].[...] Full article
Open AccessShort Note 2-Bromo-N1, N1, N4, N4-tetramethyl-benzene-1,4-diamine
Molbank 2002, 2002(1), M288; doi:10.3390/M288
Received: 4 March 2002 / Accepted: 15 March 2002 / Published: 24 February 2003
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Abstract
Compound 3 has been reported in a patent1 as a catalyst for hydrogen peroxide bleaching in photographic processing methods, but no synthesis or spectroscopic data are available in the chemical literature.[...] Full article
Open AccessShort Note 3(2,4-Dinitrobenzyl)-2,4-pentanedione
Molbank 2002, 2002(1), M289; doi:10.3390/M289
Received: 4 March 2002 / Accepted: 15 March 2002 / Published: 24 February 2003
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Abstract
Substituted pentanediones are widely used as ligands for metal complexes.[...] Full article
Open AccessShort Note 2-(2-Bromophenyl)-1-(4-methoxyphenyl)ethanone
Molbank 2002, 2002(1), M290; doi:10.3390/M290
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 24 February 2003
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Abstract
To anhydrous AlCl3 (27.35 g, 205 mmol) and anisole (24.11 g, 223 mmol) in dry chloroform (300 mL) 2-bromobenzeneacetyl chloride [1] (43.4 g, 186 mmol) in dry chloroform (100 mL) was added over 30 min at 0 °C and stirred at ambient
[...] Read more.
To anhydrous AlCl3 (27.35 g, 205 mmol) and anisole (24.11 g, 223 mmol) in dry chloroform (300 mL) 2-bromobenzeneacetyl chloride [1] (43.4 g, 186 mmol) in dry chloroform (100 mL) was added over 30 min at 0 °C and stirred at ambient temperature for 15 h.[...] Full article
Open AccessShort Note [4-(2-Bromoethyl)phenoxy]-(1,1-dimethylethyl)dimethylsilane
Molbank 2002, 2002(1), M291; doi:10.3390/M291
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 24 February 2003
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Abstract
To 4-(2-bromoethyl)phenol [1] (28.75 g, 143 mmol) and tert-butyldimethylchlorosilane (23.64 g, 159 mmol) in dry THF (600 mL), imidazole (24.27 g, 357 mmol) was added at 15 °C over 10 min and stirred at ambient temperature.[...] Full article
Open AccessShort Note 2-Bromo-5-hydroxy-4-methoxybenzenemethanol
Molbank 2002, 2002(1), M292; doi:10.3390/M292
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 24 February 2003
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Open AccessShort Note 4-Bromo-5-(chloromethyl)-2-methoxyphenol
Molbank 2002, 2002(1), M293; doi:10.3390/m293
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 10 May 2002
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Abstract
2-Bromo-5-hydroxy-4-methoxybenzenemethanol [1] (38.8 g, 166 mmol) in dry chloroform (200 mL) was treated with thionyl chloride (200 mL, 2.76 mol) at 0 °C and stirred for 3 h at ambient temperature.[...] Full article
Figures

Open AccessShort Note 2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic Acid
Molbank 2002, 2002(1), M294; doi:10.3390/M294
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 27 February 2003
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Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetonitrile [1] (5.86 g, 20.6 mmol) was refluxed in 25% NaOH (50 mL)/EtOH (50 mL) for 12 h.[...] Full article
Open AccessShort Note 2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetyl Chloride
Molbank 2002, 2002(1), M295; doi:10.3390/M295
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 27 February 2003
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Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic acid [1] (4.00 g, 13.2 mmol) and DMF (100 μL) were stirred in thionyl chloride (40 mL) for 3 h at ambient temperature.[...] Full article
Open AccessShort Note 2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic Acid Ethyl Ester
Molbank 2002, 2002(1), M296; doi:10.3390/M296
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 27 February 2003
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Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic acid chloride [1] (3.00 g, 9.33 mmol) was treated with dry EtOH (50 mL) at 0 °C.[...] Full article
Open AccessShort Note 2-[2-[2-Bromo-4-methoxy-5-(1-methylethoxy)phenyl]-1-oxoethyl]-2-[4-(1-methylethoxy)phenylmethyl]propanedioic Acid Dimethyl Ester
Molbank 2002, 2002(1), M297; doi:10.3390/M297
Received: 20 December 2001 / Accepted: 8 May 2002 / Published: 27 February 2003
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Abstract
To a suspension of NaH (685 mg, 15.7 mmol, 55% in oil, purified by trituration with dry petroleum ether (3 x 30 mL)) in dry THF (30 mL) [[4-(1-methylethoxy)phenyl]methyl]propanedioic acid dimethyl ester [1] (4.00 g, 14.3 mmol) in dry THF (10 mL) was
[...] Read more.
To a suspension of NaH (685 mg, 15.7 mmol, 55% in oil, purified by trituration with dry petroleum ether (3 x 30 mL)) in dry THF (30 mL) [[4-(1-methylethoxy)phenyl]methyl]propanedioic acid dimethyl ester [1] (4.00 g, 14.3 mmol) in dry THF (10 mL) was added at 0 °C and stirred for 1 h at ambient temperature.[...] Full article

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