Regioselective Synthesis of α-Functional Stilbenes via Precise Control of Rapid <i>cis</i>–<i>trans</i> Isomerization in Flow
作者:Hyune-Jea Lee、Yuya Yonekura、Nayoung Kim、Jun-ichi Yoshida、Heejin Kim
DOI:10.1021/acs.orglett.1c00538
日期:2021.4.16
The rapid cis–trans isomerization of α-anionic stilbene was regioselectively controlled by using flow microreactors, and its reaction with various electrophiles was conducted. The reaction time was precisely controlled within milliseconds to seconds at −50 °C to selectively give the cis- or trans-isomer in high yields. This synthetic method in flow was well-applied to synthesize precursors of commercial
通过使用流动微反应器可选择性地控制α-阴离子的快速顺式-反式异构化,并使其与各种亲电试剂进行反应。将反应时间精确控制在-50°C的毫秒至秒之间,以高收率选择性地产生顺式或反式异构体。这种流动的合成方法被很好地用于合成具有高区域选择性和生产率的商品药物化合物(E)-和(Z)-他莫昔芬的前体。