Titanium-Catalyzed Cyano-Borrowing Reaction for the Direct Amination of Cyanohydrins with Ammonia
作者:Qing-Hua Li、Zhao-Feng Li、Jing Tao、Wan-Fang Li、Li-Qing Ren、Qian Li、Yun-Gui Peng、Tang-Lin Liu
DOI:10.1021/acs.orglett.9b03194
日期:2019.10.18
intermedia in organic chemistry. Herein, the direct amination of cyanohydrins with the partner of ammonia to synthesis N-unprotected α-aminonitriles is developed. The reaction proceeds via titanium-catalyzed cyano-borrowing reaction, which features high atom economy and simple operation. A broad range of ketone or aldehyde cyanohydrins was tolerated with ammonia, and the N-unprotected α-aminonitriles were
α-氨基腈是天然产物中的重要组成部分,也是有机化学中的重要中间介质。本文中,开发了氰醇与氨的伙伴直接胺化以合成N-未保护的α-氨基腈。该反应通过钛催化的氰基借位反应进行,该反应具有较高的原子经济性和操作简单的特点。氨可耐受各种酮或醛氰醇,并且在温和的反应条件下以中等至高收率合成了N-未保护的α-氨基腈。