收录:
摘要:
The indirect anodic oxidation of chalcone epoxides in the presence of electron-rich heteroarenes mediated by a triarylimidazole (Med) was investigated by cyclic voltammetry (CV) and controlled potential electrolysis. The CV results indicate that a homogeneous electron transfer between Med(center dot+) and chalcone epoxides is facilitated by an electron-rich heteroarene that serves as an arylation reagent. The preparative scale electrolysis generated epoxide-ring-opened/Friedel-Crafts arylation products in moderate to good yields. The fact that only a catalytic amount of charge was required suggests that Med(center dot+) initiates a chain reaction. In addition, overoxidation of the products is avoided even though their oxidation potential is less than that of the starting chalcone epoxides.
关键词:
通讯作者信息:
电子邮件地址:
来源 :
JOURNAL OF ORGANIC CHEMISTRY
ISSN: 0022-3263
年份: 2015
期: 2
卷: 80
页码: 781-789
3 . 6 0 0
JCR@2022
ESI学科: CHEMISTRY;
ESI高被引阀值:253
JCR分区:1
中科院分区:2
归属院系: