Synthèse par réactions SRN1 de nouveaux 5-nitroimidazoles antiparasitaires et antibactériens
摘要:
1-Methyl-2-chloromethyl-5-nitroimidazole reacts by an S(RN)1 mechanism with various aliphatic, cyclic or heterocyclic nitronate anions to afford, in high yields, new 5-nitroimidazoles bearing a trisubstituted ethylenic double bond at the 2 position. Some of these compounds are as active as metronidazole in vitro and in vivo against protozoa and anaerobic bacteria. Structure-activity relationships are discussed.
Synthèse par réaction sRN1 de nouveaux dérivés en série imidazo[1,2-α]pyridine à potentialités pharmacologiques
作者:Patrice Vanelli、Nacer Madadi、Christine Roubaud、José Maldonado、Michel P. Crozet
DOI:10.1016/s0040-4020(01)87129-5
日期:1991.1
The study of SRN1 reaction between 2-chloromethyl-3-nitroimidazo[1,2-a] pyridine and 2-nitropropane salts has been extended to various aliphatic, cyclic and heterocyclic nitronate anions. From C-alkylation products, base-promoted nitrous acid elimination afforded new potential pharmacological derivatives with a trisubstituted double bond at the 2 position.
Chemistry of dioxiranes. 13. Oxidation of primary amines by dimethyldioxirane
作者:Robert W. Murray、Shirish N. Rajadhyaksha、Lily Mohan
DOI:10.1021/jo00285a027
日期:1989.11
<i>S<sub>RN</sub></i>1 Reactions in the Nitrobenzo[1,3]dioxole Series
作者:J. Meuche-Albeny、P. Rathelot、M. P. Crozet、P. Vanelle
DOI:10.1023/b:cohc.0000003513.53760.fb
日期:2003.8
Fluorination of Nitro Compounds with Acetyl Hypofluorite
作者:Shlomo Rozen、Arie Bar-Haim、Eyal Mishani
DOI:10.1021/jo00101a047
日期:1994.11
Various types of nitro derivatives are fluorinated to form the CFNO2 moiety in very good yields using acetyl hypofluorite (AcOF). The corresponding nitro anion, preferably prepared with NaOMe, is added quickly to a cold (-75 degrees C) CFCl3 solution of AcOF, and although it contains water and acetic acid little or no protonation occurs because these proton donors are frozen. Many of the starting nitro derivatives were prepared by oxidizing the corresponding amino derivatives using the complex HOF.CH3CN, prepared by bubbling F-2 through aqueous acetonitrile.
Liquid Phase Nitration of Bicyclo [2.2.1]heptane and Decahydronaphthalene