Quinoxaline synthesis in novel tandem one-pot protocol
摘要:
A variety of quinoxalines were synthesized via tandem one-pot procedure for the first time in water medium. The key strategy was the in situ preparation of alpha-halo-beta-keto esters by the reaction of N-bromo succinimide with beta-keto esters and further condensation with phenylene diamines. This novel eco-friendly approach offers an easy, efficient, and mild synthesis of highly substituted quinoxalines in good yields. (C) 2011 Elsevier Ltd. All rights reserved.
The catalyst-free one-pot synthesis of quinoxaline-2-carboxylate is reported by the reaction of alpha-halo-beta-ketoesters with 1,2-diamines using an ionic liquid as an environmentally benign solvent The recovered ionic liquid was reused for four to five cycles Moreover, the method is applicable for a variety of 1,2-diamines and alpha-halo-beta-ketoesters (c) 2010 Elsevier Ltd All rights reserved
Quinoxaline synthesis in novel tandem one-pot protocol
A variety of quinoxalines were synthesized via tandem one-pot procedure for the first time in water medium. The key strategy was the in situ preparation of alpha-halo-beta-keto esters by the reaction of N-bromo succinimide with beta-keto esters and further condensation with phenylene diamines. This novel eco-friendly approach offers an easy, efficient, and mild synthesis of highly substituted quinoxalines in good yields. (C) 2011 Elsevier Ltd. All rights reserved.