Asymmetric Hydrogenation of Dibenzo[<i>c,e</i>]azepine Derivatives with Chiral Cationic Ruthenium Diamine Catalysts
作者:Shanshan Zhang、Fei Chen、Yan-Mei He、Qing-Hua Fan
DOI:10.1021/acs.orglett.9b01859
日期:2019.7.19
An efficient Ru-catalyzed asymmetric hydrogenation of dibenzo[c,e]azepines is reported. A series of seven-membered cyclic amines were obtained with moderate to excellent enantioselectivity. The catalyst counteranion played an important role in achieving high-level chiral induction. Moreover, a one-pot synthesis of chiral 6,7-dihydro-5H-dibenz[c,e]azepines via two-step reductive amination was also developed
报道了有效的Ru催化的二苯并[ c,e ] a庚因的不对称氢化。获得了一系列具有中等至优异对映选择性的七元环胺。催化剂抗衡阴离子在实现高水平手性诱导中起着重要作用。此外,还开发了通过两步还原胺化反应一锅合成手性6,7-二氢-5 H -dibenz [ c,e ]氮杂。