Diastereoselective reactions of pyruvates with but-2-enyl organometallic compounds. Stereocontrol at the tertiary carbon centre
作者:Yoshinori Yamamoto、Toshiaki Komatsu、Kazuhiro Maruyama
DOI:10.1039/c39830000191
日期:——
The reaction of pyruvates (3) with but-2-enyl-9-borabicyclo[3.3.1]nonane(2a) or its α-silyl and α-stannyl substituted derivatives (10) produced the threo-isomer [(4) or (11), respectively] stereoselectively; the latter reaction was applied to the synthesis of cis-crobarbatic acid(14).
丙酮酸酯(3)与丁-2-烯基-9-硼环[3.3.1]壬烷(2a)或其α-甲硅烷基和α-锡烷基取代的衍生物(10)的反应产生了苏式异构体[(4)或(11)分别]立体选择性地;后者反应用于合成顺式-巴豆酸(14)。