Sequential C–H Functionalization Reactions for the Enantioselective Synthesis of Highly Functionalized 2,3-Dihydrobenzofurans
作者:Hengbin Wang、Gang Li、Keary M. Engle、Jin-Quan Yu、Huw M. L. Davies
DOI:10.1021/ja401731d
日期:2013.5.8
The enantioselective synthesis of 2,3-dihydrobenzofurans was achieved by using two sequential C-H functionalization reactions, a rhodium-catalyzed enantioselective intermolecular C-H insertion followed by a palladium-catalyzed C-H activation/C-O cyclization. Further diversification of the 2,3-dihydrobenzofuran structures was possible by a subsequent palladium-catalyzed intermolecular Heck-type sp(2)
2,3-二氢苯并呋喃的对映选择性合成是通过使用两个连续的 CH 官能化反应来实现的,即铑催化的对映选择性分子间 CH 插入,然后是钯催化的 CH 活化/CO 环化。通过随后的钯催化分子间 Heck 型 sp(2) CH 功能化,2,3-二氢苯并呋喃结构的进一步多样化是可能的。