Conversion of Carbonyl Compounds to Olefins
<i>via</i>
Enolate Intermediate
作者:Zhi‐Chao Cao、Pei‐Lin Xu、Qin‐Yu Luo、Xiao‐Lei Li、Da‐Gang Yu、Huayi Fang、Zhang‐Jie Shi
DOI:10.1002/cjoc.201800554
日期:2019.8
A general and efficient protocol to synthesize substituted olefins from carbonyl compounds via nickel catalyzed C—O activation of enolates was developed. Besides ketones, aldehydes were also suitable substrates for the presented catalytic system to produce di‐ or tri‐ substituted olefins. It is worth noting that this approach exhibited good tolerance to highly reactive tertiary alcohols, which could
提出了通过镍催化烯醇化物的CO活化从羰基化合物合成取代烯烃的通用有效方法。除酮外,醛也是所提出的催化体系生产二或三取代烯烃的合适底物。值得注意的是,这种方法对高反应性叔醇表现出良好的耐受性,而在其他报道的将羰基化合物转化为烯烃的途径中,这种方法无法幸免。该方法对烯烃产品也表现出良好的区域和立体选择性。初步的机理研究表明,该反应是通过镍催化的烯醇化物的CO活化而完成的,从而为当前的烯醇化学提供了有益的帮助。