Synthesis of Enantioenriched 3,4-Disubstituted Chromans through Lewis Base Catalyzed Carbosulfenylation
作者:Travis Menard、Aragorn Laverny、Scott E. Denmark
DOI:10.1021/acs.joc.1c02290
日期:2021.11.5
carbosulfenylation of alkenes to construct 3,4-disubstituted chromans is described. Alkene activation proceeds through the intermediacy of enantioenriched, configurationally stable thiiranium ions generated from catalytic, Lewis base activation of an electrophilic sulfenylating agent. The transformation affords difficult-to-generate, enantioenriched, 3,4-disubstituted chromans in moderate to high yields and
描述了烯烃催化、对映选择性、羰基化以构建 3,4-二取代色满的方法。烯烃活化通过亲电子亚磺酰化剂的催化路易斯碱活化产生的对映体富集、构型稳定的硫鎓离子进行。该转化以中等至高产率和优异的对映选择性提供了难以生成的、对映富集的 3,4-二取代色满。多种取代基是相容的,包括电子多样化的官能团以及几种官能团,例如芳基卤化物、酯、苯胺和苯酚。得到的硫醚部分可以进行许多官能团操作和转化。尤其,