68674-65-7Relevant articles and documents
Graphene oxide (GO) or reduced graphene oxide (rGO): Efficient catalysts for one-pot metal-free synthesis of quinoxalines from 2-nitroaniline
Roy, Babli,Ghosh, Sujit,Ghosh, Pranab,Basu, Basudeb
, p. 6762 - 6767 (2016/01/30)
A straightforward one-pot preparation of library of quinoxalines from 2-nitroanilines under entirely metal-free conditions is described. Initial reduction of nitroaniline with hydrazine hydrate is efficiently catalyzed by graphene oxide (GO) or reduced graphene oxide (rGO), and further one-pot tandem reactions with 1,2-dicarbonyl compounds or with α-hydroxy ketones afford quinoxalines in excellent yields. The catalyst is recovered, characterized, and found to be recyclable for consecutive four runs examined with appreciable conversions.
Cu(II)-catalyzed synthesis of quinoxalines from o-phenylenediamines and nitroolefins
Chen, Yongxin,Li, Kangning,Zhao, Mingming,Li, Yuanjiao,Chen, Baohua
supporting information, p. 1627 - 1630 (2013/03/28)
An easy and efficient copper-catalyzed reaction for the synthesis of quinoxalines from o-phenylenediamines and nitroolefins is developed. This reaction could proceed well without additional base and be applied to various available substrates with a one-step synthetic procedure in moderate to good yields.
La(OTf)3 catalyzed synthesis of quinoxalines
Raju, B. China,Ramachandra
experimental part, p. 756 - 759 (2012/06/30)
Lanthanum trifluoromethanesulfonate is found to be an efficient and highly effective catalyst for the synthesis of quinoxalines 3a-l by the condensation of aromatic 1,2-diamines 1 with 1,2-diketones 2 under ambient conditions. The method is simple and eff
