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 。