作者:R. Ian Storer、Diane E. Carrera、Yike Ni、David W. C. MacMillan
DOI:10.1021/ja057222n
日期:2006.1.1
The first enantioselectiveorganocatalyticreductive amination reaction has been accomplished. The development of a new chiral phosphoric acid catalyst has provided a convenient strategy for the enantioselective construction of protected primary amines and provided a highly stereoselective method for the reductive amination of heterocyclic amines. A diverse spectrum of ketone and amine substrates can
Borane-Catalyzed Chemoselectivity-Controllable N-Alkylation and <i>ortho</i> C-Alkylation of Unprotected Arylamines Using Benzylic Alcohols
作者:Shan-Shui Meng、Xiaowen Tang、Xiang Luo、Ruibo Wu、Jun-Ling Zhao、Albert S. C. Chan
DOI:10.1021/acscatal.9b03038
日期:2019.9.6
efficient and highlychemoselective alkylation of unprotected arylamines using alcohols catalyzed by B(C6F5)3 has been developed. The reaction gives N-alkylated products and ortho C-alkylated products in different solvents in good chemoselectivities and yields. Control experiments and DFT calculations indicated that the borane underwent alcohol/arylamine exchange to ensure catalytic activity, and a
已经开发出一种空前的方案,用于使用受B(C 6 F 5)3催化的醇对未保护的芳基胺进行高效且高度化学选择性的烷基化反应。该反应在不同溶剂中以良好的化学选择性和收率得到N-烷基化产物和邻C-烷基化产物。控制实验和DFT计算表明,硼烷进行了醇/芳基胺交换以确保催化活性,并提出了涉及碳正离子化的可能机理。
Oxidative Kinetic Resolution of Acyclic Amines Based on Equilibrium Control
An oxidative kinetic resolution of racemic acyclic amines was developed using an imine derivative as the resolving reagent and chiral phosphoric acid as the catalyst to give enantiomers in good yields with high to excellent enantioselectivities. The key to success of the title reaction was the equilibrium control by adjusting the ratio of the resolving reagent, and unique enantiodivergence was observed
Molecular iodine catalyzed transfer hydrogenation: reduction of aldimines, ketimines, and α-imino esters
作者:Prabhakar Bachu、Chen Zhu、Takahiko Akiyama
DOI:10.1016/j.tetlet.2013.05.071
日期:2013.7
An efficient and practical protocol for the reduction of aldimines, ketimines, and alpha-imino esters in the presence of catalytic amount of molecular iodine with Hantzsch ester at ambient temperature afforded the corresponding amines in excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.