General Anti-Markovnikov Hydrophosphinylation of Olefins Using Disulfide as the Photocatalyst and a Hydrogen Atom Shuttle
作者:Guoxiang Zhang、Hui He、Xiaoxiao Chen、Shao-Fei Ni、Rong Zeng
DOI:10.1021/acs.orglett.3c01939
日期:2023.7.21
The photoinduced radical-based hydrophosphinylation suffered from substrate scope limitation due to the highly electrophilic property of the P(O) radical. Herein, we report an efficient catalytic system for the intermolecular anti-Markovnikov hydrophosphinylation of olefins using disulfide as a photocatalyst and also a hydrogen atom shuttle. This metal-free, base-free, and redox-neutral condition allowed
由于P(O)自由基的高亲电子特性,光诱导自由基氢膦酰化受到底物范围的限制。在此,我们报道了一种使用二硫化物作为光催化剂和氢原子穿梭的烯烃分子间反马可夫尼科夫氢膦酰化的有效催化系统。这种无金属、无碱和氧化还原中性的条件使得具有不同电子性质的烯烃能够有效地进行反马尔可夫尼科夫 P-H 加成。提出了一种涉及 ArS• 和 P(O)–H 之间 HAT 过程的合理机制。