2-Azanorbornane-based amine organocatalyst for enantioselective aldol reaction of isatins with ketones
作者:Ayumi Ogasawara、U.V. Subba Reddy、Chigusa Seki、Yuko Okuyama、Koji Uwai、Michio Tokiwa、Mitsuhiro Takeshita、Hiroto Nakano
DOI:10.1016/j.tetasy.2016.08.013
日期:2016.11
Optically active 2-azanorbornane-based organocatalysts were designed and synthesized, and the catalytic activity of these catalysts in enantioselective aldol reactions of isatins with ketones was investigated. Among these catalysts, 2-azanorbornylmethanol showed the best catalytic activity to afford the corresponding aldol product in excellent chemical yield (up to 95%) and with moderate stereoselectivity (up to 64% ee, up to syn:anti = 36:64). (C) 2016 Elsevier Ltd. All rights reserved.