Azolium/Hydroquinone Organo‐Radical Co‐Catalysis: Aerobic C−C‐Bond Cleavage in Ketones
作者:Yuya Nakatsuji、Yusuke Kobayashi、Sakyo Masuda、Yoshiji Takemoto
DOI:10.1002/chem.202004943
日期:2021.2.5
Organo‐radical catalysts have recently attracted great interest, and the development of this field can be expected to broaden the applications of organocatalysis. Herein, the first example of a radical‐generating system is reported that does not require any photoirradiation, radical initiators, or preactivated substrates. The oxidative C−C‐bond cleavage of 2‐substituted cyclohexanones was achieved
有机自由基催化剂近来引起了人们的极大兴趣,可以预期该领域的发展将拓宽有机催化的应用范围。在此,报道了自由基产生系统的第一个示例,该系统不需要任何光辐射,自由基引发剂或预活化的底物。使用偶氮盐和对苯二酚作为助催化剂可实现2个取代的环己酮的氧化C-CC键裂解。基于扩散有序光谱学和循环伏安法测量的结果以及计算研究,提出了一种催化机理。