The identification and development of a catalyst for the enantioselective nucleophilic addition of a trifluoromethyl anion to a ketone is described. An easily prepared cinchonine-derived catalyst was used in amounts as low as 4 mol% to afford enantiomeric excess as high as 92%.
本文描述了一种用于三
氟甲基负离子对酮的亲核加成反应的手性催化剂的鉴定与开发情况。采用一种易于制备的
辛可宁衍
生物催化剂,在仅使用4摩尔%的极低用量下,即可达到高达92%的对映体过量。