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Molecules, Volume 6, Issue 10 (October 2001), Pages 796-844

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Research

Open AccessArticle Unambiguous Assignment of the 1H- and 13C-NMR Spectra of Propafenone and a Thiophene Analogue
Molecules 2001, 6(10), 796-802; doi:10.3390/61000796
Received: 4 December 2000 / Revised: 12 September 2001 / Accepted: 12 September 2001 / Published: 30 September 2001
Cited by 1 | PDF Full-text (38 KB) | HTML Full-text | XML Full-text
Abstract Full and unambiguous asssignment of all 1H- and 13C-NMR resonances of the free bases as well as the hydrochloride salts of the antiarrhythmic agent propafenone and a thiophene analogue in different solutions (DMSO-d6, CDCl3) is reported. Full article
Open AccessArticle Synthesis of the Aspidosperma Alkaloid Na-Formyl-16-α-Hydroxyaspidospermidine
Molecules 2001, 6(10), 803-814; doi:10.3390/61000803
Received: 1 April 2001 / Revised: 6 September 2001 / Accepted: 8 September 2001 / Published: 30 September 2001
PDF Full-text (110 KB) | HTML Full-text | XML Full-text
Abstract The first total synthesis of Na-formyl-16α-hydroxyaspidospermidine and its isomer via (±)-vincadifformine is described and their structure elucidation using different methods of analysis is reported. Full article
Open AccessArticle Synthesis, Antibacterial and Antifungal Activity of 4-Substituted-5-Aryl-1,2,4-Triazoles
Molecules 2001, 6(10), 815-824; doi:10.3390/61000815
Received: 8 February 2001 / Revised: 24 September 2001 / Accepted: 26 September 2001 / Published: 30 September 2001
Cited by 64 | PDF Full-text (93 KB)
Abstract
A few 4-allyl/amino-5-aryl-1,2,4-triazoles were synthesized and tested for antibacterial and antifungal effects against Escherichia coli, Bacillus subtilis, Salmonella enteritidis, Staphylococcus aureus, Aspergillus niger and Candida albicans. 4-Allyl-5-aryl-1,2,4-triazoles were obtained by the oxidative cyclization of the appropriate 1-substituted-4-allylthiosemicarbazides and 4-amino-5-aryl-1,2,4-triazoles were obtained [...] Read more.
A few 4-allyl/amino-5-aryl-1,2,4-triazoles were synthesized and tested for antibacterial and antifungal effects against Escherichia coli, Bacillus subtilis, Salmonella enteritidis, Staphylococcus aureus, Aspergillus niger and Candida albicans. 4-Allyl-5-aryl-1,2,4-triazoles were obtained by the oxidative cyclization of the appropriate 1-substituted-4-allylthiosemicarbazides and 4-amino-5-aryl-1,2,4-triazoles were obtained by cyclization of the potassium salts of appropriately substituted dithiocarbazinic acids with hydrazine hydrate. The new synthesized compounds were characterized using IR, 1H- NMR, 13C-NMR and UV spectral data together with elemental analysis. Full article
Open AccessArticle A Convenient Method to Prepare Labile FMN Derivatives
Molecules 2001, 6(10), 825-830; doi:10.3390/61000825
Received: 30 September 2001 / Accepted: 10 October 2001 / Published: 31 October 2001
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Abstract A simple method for selective phosphorylation of ribityl containing starting materials to afford FMN derivatives is presented. The method is in particular valuable for the synthesis of labile FMN derivatives. Full article
Open AccessArticle Applications of Microwave in Organic Synthesis: An Improved One-step Synthesis of Metallophthalocyanines and a New Modified Microwave Oven for Dry Reactions
Molecules 2001, 6(10), 831-844; doi:10.3390/61000831
Received: 7 September 2001 / Accepted: 10 October 2001 / Published: 31 October 2001
Cited by 23 | PDF Full-text (101 KB) | HTML Full-text | XML Full-text
Abstract
Metallophthalocyanine complexes are obtained quickly and efficiently by the reaction of phthalodinitrile with hydrated metallic salts without solvent and under microwave irradiation. The use of a modified commercial microwave oven to perform this type of reactions under dry conditions is described. Metallophthalocyanines [...] Read more.
Metallophthalocyanine complexes are obtained quickly and efficiently by the reaction of phthalodinitrile with hydrated metallic salts without solvent and under microwave irradiation. The use of a modified commercial microwave oven to perform this type of reactions under dry conditions is described. Metallophthalocyanines and metallododecachlorophthalocyanines of some divalent metals can be also obtained from phthalic or tetrachlorophthalic anhydrides with hydrated metallic salt and urea under microwave irradiation and without solvent. Full article

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