Synthesis of New 2-Highly Branched 5-Nitroimidazoles by Bis-SRN1 Methodology
摘要:
A versatile bis-S(RN)1 methodology allows straightforward access to 2-highly branched 5-nitroimidazoles by reacting 3-chloro-2-chloromethyl-1-(1-methyl-5-nitroimidazol-2-yl)prop-1-ene with various nitronate anions.
Reactions SRN1 en serie heterocyclique: II. Reactivite du methyl-1 chloromethyl-2 nitro-5 imidazole.
作者:Michel P Crozet、Jean-Marie Surzur、Patrice Vanelle、Claude Ghiglione、José Maldonado
DOI:10.1016/s0040-4039(00)98502-2
日期:1985.1
1-methyl-5-nitro-imidazoles bearing a trisubstituted ethylenic double bond in the 2 position. These compounds are ascribed to a C-alkylation reaction according to the SRN1 mechanism followed by base-promoted nitrous acid elimination.
RAPID SYNTHESIS OF SUBSTITUTED IMIDAZO[2,1-<i>b</i>]THIAZOLES UNDER MICROWAVE CONDITIONS
作者:Armand Gellis、Yves Njoya、Michel P. Crozet、Patrice Vanelle
DOI:10.1081/scc-100104014
日期:2001.1.1
A simple, rapid, and efficient method for the synthesis of original substituted imidazo[2,1-b]thiazoles under microwave irradiation is described.
Mono-deoxygenation of Nitroalkanes, Nitrones, and Heterocyclic <i>N</i>-Oxides by Hexamethyldisilane through 1,2-Elimination: Concept of “Counterattack Reagent”
作者:Jih Ru Hwu、Wen Nan Tseng、Himatkumar V. Patel、Fong Fuh Wong、Den-Nan Horng、Ben Ruey Liaw、Lung Ching Lin
DOI:10.1021/jo981054i
日期:1999.4.1
Transformation of secondary nitroalkanes to ketoximes was achieved in 40-73% yields by treatment of the corresponding nitronate anions with hexamethyldisilane. In this new mono-deoxygenation process, hexamethyldisilane acted as a "counterattack reagent". The conversion of nitrones to imines was also achieved in 82-88% yields by use of trimethylsilyllithium. Similarly, heterocyclic N-oxides were converted to the corresponding N-heterocycles in 73-86% yields. These deoxygenation processes presumably involve a 1,2-elimination.
Synthesis of Various Substituted Nitroisoquinolines by SRN1 Methodology
作者:Patrice Vanelle、Pascal Rathelot、José Maldonado、Michel P. Crozet
DOI:10.3987/com-97-7829
日期:——
The versatile S(RN)1 methodology allows straightforward access to new 1-substituted 5-nitroisoquinolines from an original heterocyclic reductive alkylating agent, 1-chloromethyl-5-nitroisoquinoline, with various nitronate anions. By base-promoted nitrous acid elimination, trisubstituted olefins are prepared from the C-alkylation derivatives.
Novel intramolecular photorearrangement of nitronate anions