Electrochemical Reduction of 2,2-Dibromoacetophenone.
作者:Belen Batanero、Gustavo Pastor、Fructuoso Barba、Jose M. Diaz、Silvina Bassani、Hiroaki Murase、Tatsuya Shono、H. Toftlund
DOI:10.3891/acta.chem.scand.53-0910
日期:——
The cathodic reduction of 2,2-dibromoacetophenone in aprotic medium DMF-LiClO4 yields (E)-4,4-dibromo-1,3-diphenyl-2,3-epoxybutan-1-one as the major product and trans-1,2,3-tribenzoylcyclopropane through an ionic or carbene route, respectively. When the electrolysis is carried out under highly dilute conditions, together with these products, (E)-4-bromo-1,3-diphenyl-2,3-epoxybutan-1-one and (Z)-4-bromo-1,3-diphenyl-2,3-epoxybutan-1-one are obtained.