作者:N. Petragnani、R. Rodrigues、J.V. Comasseto
DOI:10.1016/s0022-328x(00)87285-x
日期:1976.7
The transylidation reactions of PhSeBr with two equivalents of an alkylidene-triphenylphosphorane give selenophosphoranes, Ph3PCRSePh. These also can be obtained by treating the corresponding selenophosphonium salts, prepared by quarternization of triphenylphosphine with PhSeCHRBr, with n-BuLi. The selenophosphoranes react with aldehydes in situ (Wittig reaction) to give the expected vinylic selenides
PhSeBr的与两个当量的transylidation反应亚烷基-三苯基正膦给予selenophosphoranes中,Ph 3 PCRSePh。这些也可以通过处理相应的selenophosphonium盐而获得,制备三苯膦quarternization与PhSeCHRBr,用n-BuLi。所述selenophosphoranes与醛反应,原位(Wittig反应),得到在良好的产率的预期乙烯基硒化物。讨论了反应的立体化学。