Reactions of bromonitroalkenes with tervalent phosphorus. Part I. Reaction in aprotic solvents
作者:Celestine J. Devlin、Brian J. Walker
DOI:10.1039/p19730001428
日期:——
The reaction of a variety of 2-substituted 1-bromo-1-nitroethylenes with triphenylphosphine in benzene or ethyl acetate gave good yields of cyanomethyl(triphenyl)phosphonium salts, which on treatment with base afforded the corresponding ylides. An analogous cyanomethylphosphonate was obtained from a reaction with triethyl phosphite. Three alternative sites of initial attack by phosphine are considered