The reaction of alkyl radicals with alkyl diphenylphosphinites
作者:R.S. Davidson
DOI:10.1016/s0040-4020(01)82871-4
日期:1969.1
with a number of alkyl diphenylphosphinites to give triphenylphosphinine oxide plus alkyltriphenylmethane. Cyclopentyl and cyclohexyl diphenylphosphinites were found to react abnormally in that they gave cycloalkene instead of cycloalkyltriphenylmethane. Reactions are postulated as occurring by attack of the alkylradical upon the trivalent phosphorus ester to give a phosphoranyl radical which subsequently
A Linchpin Carbacyclization Approach for the Synthesis of Carbanucleosides
作者:Leo M. H. Leung、Vicky Gibson、Bruno Linclau
DOI:10.1021/jo801848h
日期:2008.12.5
A convenientsynthesis of carbanucleosides, with both enantiomers equally accessible, is reported. The key step is a tandem linchpin cyclization process to give access to substituted carbafuranose derivatives having the correct relative stereochemistry for subsequent nucleobase introduction with inversion of configuration at C1. This was illustrated by the synthesis of 2',3'-dideoxycarbathymidine via
An Efficient Method for the Preparation of Monoalkylated Sulfonamides from Unsubstituted Sulfonamides and Alkyl Diphenylphosphinites by Oxidation–Reduction Condensation Using Trimethylsilylmethyl Azide
作者:Hidenori Aoki、Kiichi Kuroda、Teruaki Mukaiyama
DOI:10.1246/cl.2005.1266
日期:2005.9
An efficientmethod for monoalkylation of unsubstituted sulfonamides was established by usingalkyl diphenylphosphinites, sulfonamides and trimethylsilylmethyl azide and the monoalkylated sulfonami...