Cobalt-Catalyzed Markovnikov-Selective Radical Hydroacylation of Unactivated Alkenes with Acylphosphonates
作者:Benxiang Zhang、Jiayan He、Yi Li、Tao Song、Yewen Fang、Chaozhong Li
DOI:10.1021/jacs.1c02629
日期:2021.4.7
Acylphosphonates having the 5,5-dimethyl-1,3,2-dioxophosphinanyl skeleton are developed as efficient intermolecular radical acylation reagents, which enable the cobalt-catalyzed Markovnikov hydroacylation of unactivated alkenes at room temperature under mild conditions. The protocol exhibits broad substrate scope and wide functional group compatibility, providing branched ketones in satisfactory yields
具有5,5-二甲基-1,3,2-二氧代次膦烷基骨架的酰基膦酸酯被开发为有效的分子间自由基酰化试剂,其能够在温和的条件下在室温下对未活化的烯烃进行钴催化的马尔可夫尼可夫加氢酰化。该方案具有广泛的底物范围和广泛的官能团兼容性,可提供令人满意的收率的支链酮。提出了一种涉及Co-H介导的氢原子转移和随后被酰基膦酸酯捕获烷基的机理。