Copper‐Catalyzed Ring Opening of Benzofurans and an Enantioselective Hydroamination Cascade
作者:Qing‐Feng Xu‐Xu、Qiang‐Qiang Liu、Xiao Zhang、Shu‐Li You
DOI:10.1002/anie.201809003
日期:2018.11.12
A copper(II) acetate/(R)‐DTBM‐SEGPHOS‐catalyzed ring opening of benzofurans and enantioselective hydroamination cascade with dimethoxymethylsilane (DMMS) and hydroxylamine esters is described. Starting from readily available substituted benzofurans, a series of chiral N,N‐dibenzylaminophenols, which are of high interest in pharmaceutical chemistry, were obtained with excellent enantioselectivities (up
描述了乙酸铜(II)/(R)-DTBM-SEGPHOS催化的苯并呋喃的开环以及与二甲氧基甲基硅烷(DMMS)和羟胺酯的对映选择性加氢胺化级联反应。从易于获得的取代苯并呋喃开始,获得了一系列手性N,N-二苄基氨基酚,它们在药物化学中备受关注,并具有出色的对映选择性(产率高达66%,ee高达94%)。