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 Wittigreaction 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.