Et 3 N-catalyzed oxidative dehydrogenative coupling of α-unsubstituted aldehydes and ketones with aryl diamines leading to quinoxalines using molecular oxygen as …
C Zhang, Z Xu, L Zhang, N Jiao
Index: Zhang, Chun; Xu, Zejun; Zhang, Liangren; Jiao, Ning Tetrahedron, 2012 , vol. 68, # 26 p. 5258 - 5262
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Citation Number: 34
Abstract
A novel Et3N-catalyzed oxidative dehydrogenative coupling of α-unsubstituted carbonyl compounds with aryl diamines leading to quinoxaline derivatives using molecular oxygen as oxidant has been developed. Six hydrogen dissociations involving 2 sp3 C–H bonds activation are realized under mild conditions in this approach. Plausible mechanism is proposed for this novel Et3N-catalyzed transformation on the basis of the aboratively ...
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