Organic synthesis using haloboration reaction xv. A new synthesis of α,β-unsaturated esters by the highly chemoselective reaction of B-I-9-BBN-ethoxyethyne adduct with aldehydes
作者:Yoshitaka Satoh、Takao Tayano、Shoji Hara、Akira Suzuki
DOI:10.1016/s0040-4039(01)93472-0
日期:——
A haloboration adduct, formed by the reaction of B-iodo-9-borabicyclo[3.3.1]nonanes with ethoxyethyne reacts with aldehydes chemoselectively under very mild conditions. The subsequent hydrolytic work-up affords -α,β-unsaturated esters in good yields.
B-
碘-9-
硼环[3.3.1]
壬烷与
乙氧基乙炔的反应形成的卤代加合物在非常温和的条件下与醛发生
化学选择性反应。随后的
水解后处理以良好的产率得到-α,β-不饱和酯。