An alkylphosphonyl nucleophilic substitution reaction that proceeds by an elimination–addition mechanism with an alkylidineoxophosphorane (phosphene) intermediate
作者:Martin J. P. Harger、Barbara T. Hurman
DOI:10.1039/c39950001701
日期:——
For the phosphonamidic chloride R2CHP(O)(NEt2) Cl having R2CH = 9-fluorenyl, substitution at phosphorus is unexpectedly fast with Et2NH as the nucleophile, and discriminates less than is usual between competing Me2NH and Et2NH nucleophiles; such behaviour is consistent with an elimination-addition mechanism and a fluorenylidineoxophosphorane intermediate 8.
对于具有R 2 CH = 9-芴基的膦酰氯氯化物R 2 CHP(O)(NEt 2)Cl,用Et 2 NH作为亲核试剂,磷的取代出乎意料地快,并且与竞争的Me 2 NH和Et 2 NH亲核试剂;这样的行为与消除加成机理和芴基氧代次膦酸酯中间体8是一致的。