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Abstract:
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.
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JOURNAL OF ORGANIC CHEMISTRY
ISSN: 0022-3263
Year: 2015
Issue: 2
Volume: 80
Page: 781-789
3 . 6 0 0
JCR@2022
ESI Discipline: CHEMISTRY;
ESI HC Threshold:253
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 46
SCOPUS Cited Count: 43
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
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