Dissociative ionization of aryl-substituted vinyl bromides in the gas phase: experimental and computational evidence for the formation of stable .alpha.-arylvinyl cations both by direct means and by spontaneous exothermic isomerization of unstable isomeric ions
Study of the mechanism of base induced dehydrobromination of trans-β-bromostyrene
作者:Mieczysław Mąkosza、Alexey A Chesnokov
DOI:10.1016/s0040-4020(03)00107-8
日期:2003.3
Observation that rates of dehydrobromination of trans-β-bromostyrene (1) and the Hofmann degradation of tetrabutyl ammonium cation depend on strength of base in different ways and that treatment of 1 with base results in fast abstraction of the β-proton imply the possibility that the dehydrobromination of 1 could proceed via α-elimination and Ph migration. In order to clarify this question, β-13C-labeled