Highly stereoselective nickel-catalyzed difluoroalkylation of aryl ketones to tetrasubstituted monofluoroalkenes and quaternary alkyl difluorides
作者:Chao Li、Yi-Xuan Cao、Ruo-Xing Jin、Kang-Jie Bian、Zi-Yang Qin、Quan Lan、Xi-Sheng Wang
DOI:10.1039/c9sc02806d
日期:——
stereo-defined tetrasubstituted monofluoroalkenes or quaternary alkyl difluorides from secondary or tertiary ketones, respectively, has been established. Mechanistic investigations indicated that these C-H fluoroalkylations proceed via a Ni(i)/Ni(iii) catalytic cycle. An obvious fluorine effect was observed in the reaction, and this reaction has demonstrated high stereoselectivity, mild conditions, and broad
已经建立了镍催化的芳基酮的α-CH键的二氟烷基化反应,以分别从仲酮或叔酮提供高度立体定义的四取代单氟烯烃或季烷基二氟化物。机理研究表明这些 CH 氟烷基化通过 Ni(i)/Ni(iii) 催化循环进行。反应中观察到明显的氟效应,该反应具有较高的立体选择性、温和的条件和广泛的底物范围,从而能够实现生物活性分子的后期氟烷基化。该方法为从容易获得的材料中方便地构建单氟烯烃提供了一种解决方案,并为合成生物活性氟化化合物以发现药物化学中的先导化合物提供了一种有效的方法。