Ketone Synthesis via Irradiation-Induced Generation of a Persistent Ketyl Radical from Acyl Azolium Salts
作者:Shihao Li、Chenglong Zheng、Sheng Wang、Xiao-Xuan Li、Qi Zhang、Shilu Fan、Yi-Si Feng
DOI:10.1021/acs.orglett.3c02300
日期:2023.9.8
A novel three-component α-acylated difunctionalization of alkenes strategy has been developed on the basis of a direct hydrogen atom transfer (HAT) process of photoinduced acyl azolium salts. With simple irradiation without the catalyst, a variety of olefins can be directly converted into ketone derivatives, including 1,4-dione, β-silyl ketone, 1,5-dione, etc. Mechanistic investigations indicated that
基于光诱导酰基氮鎓盐的直接氢原子转移(HAT)过程,开发了一种新型的三组分α-酰化双官能化烯烃策略。通过简单的辐照,无需催化剂,多种烯烃可以直接转化为酮衍生物,包括1,4-二酮、β-甲硅烷基酮、1,5-二酮等。机理研究表明,酰基氮鎓独特的反应活性三重激发态对于该策略的成功至关重要。