General Synthesis of <i>N</i>-Alkylation of Amines with Secondary Alcohols via Hydrogen Autotransfer
作者:Murugan Subaramanian、Siba P. Midya、Palmurukan M. Ramar、Ekambaram Balaraman
DOI:10.1021/acs.orglett.9b02990
日期:2019.11.15
Direct catalytic N-alkylation of amines with secondary alcohols via hydrogen autotransfer (HA) strategy is very challenging and has been scarcely reported, even under precious metal catalysis. Herein, an efficient N-alkylation of amines, including benzylamines using secondary alcohols as alkylating agents, is reported. This reaction is catalyzed by a molecularly defined NNN-Ni(II) pincer complex, and
通过氢自动转移(HA)策略将胺与仲醇直接催化N-烷基化非常具有挑战性,甚至在贵金属催化下也很少报道。本文中,报道了使用仲醇作为烷基化剂的胺(包括苄胺)的有效N-烷基化。该反应由分子定义的NNN-Ni(II)钳配合物催化,该反应在温和,良性的条件下进行。可以耐受各种底物和官能团。初步的机理研究表明,N-烷基化反应是通过氢自动转移机理进行的。