Asymmetric Allylic Monofluoromethylation and Methylation of Morita-Baylis-Hillman Carbonates with FBSM and BSM by Cooperative Cinchona Alkaloid/FeCl2 Catalysis
作者:Tatsuya Furukawa、Jumpei Kawazoe、Wei Zhang、Takayuki Nishimine、Etsuko Tokunaga、Takashi Matsumoto、Motoo Shiro、Norio Shibata
DOI:10.1002/anie.201103748
日期:2011.10.4
yields with high ee values (see scheme, (DHQD)2AQN=hydroquinidine(anthraquinone‐1,4‐diyl) diether). The cooperative catalysis of bis(cinchona alkaloid) and Lewis acid, particularly FeCl2, was effective for these transformations and gave the monofluoromethylation products with over 90 % ee and methylation products with up to 97 % ee.
共同努力:标题反应以高收率和高ee 值实现(参见方案,(DHQD)2 AQN =对苯二酚(蒽醌-1,4-二基)二醚)。双(金鸡纳生物碱)和路易斯酸,特别是FeCl 2的协同催化对于这些转化是有效的,并给出了具有超过90%ee的单氟 甲基化产物和具有高达97%ee的甲基化产物 。