Stereoselective synthesis of N-arylindoles and related compounds with axially chiral N–C bonds
作者:Shunsuke Kinoshita、Ken Kamikawa
DOI:10.1016/j.tet.2015.11.053
日期:2016.8
via a stereoselective Cr(CO)3 migration reaction, and, 3) catalytic enantioselective synthesis via asymmetric ring-closing metathesis. Arene chromium tricarbonyls were utilized as key building blocks, and all of these methods induced extremely high stereoselectivities. Moreover, Cr(CO)3 fragments were easily removed via air oxidation condition to afford Cr-free N-arylindoles with axially chiral N–C bonds
使用以下三个方案立体选择性地合成了轴向手性N-芳基吲哚和已实现的化合物。1)非对映选择性亲核芳族取代,2)通过立体选择性Cr(CO)3迁移反应进行脱对称,以及3)通过不对称闭环复分解反应进行催化对映选择性合成。芳烃三羰基铬被用作关键组成部分,所有这些方法都诱导了极高的立体选择性。而且,Cr(CO)3碎片很容易通过空气氧化条件除去,从而得到具有轴向手性N-C键的无Cr N-芳基吲哚。