Anomalous formation of 1,1,4-tribromohex-1-en-3-one in the wittig reaction of 2-halopent-2-enals with dibromomethylene triphenylphosphorane
作者:F. Camps、J. Coll、G. Fabriás、A. Guerrero、M. Riba
DOI:10.1016/s0040-4039(00)86278-4
日期:1983.1
The heretofore unreported Wittig reaction of 2-halopent-2-enals with dibromomethylene triphenylphosphorane yields variable amounts of 1,1,4-tribromohex-1-en-3-one and/or the expected dienes according to the substrate and reaction conditions. A plausible mechanism to rationalize the unforeseen formation of this ketone is discussed.
根据底物和反应条件,迄今未报道的2-卤戊-2-烯醛与二溴亚甲基三苯基磷烷的维蒂希反应产生可变量的1,1,4-三溴己基-1-en-3-one和/或预期的二烯。讨论了合理化该酮的不可预料的形成的合理机制。