New ligands for copper-catalyzed C–N coupling reactions with aryl halides
D Chen, K Yang, H Xiang, S Jiang
Index: Chen, Dong; Yang, Kai; Xiang, Hua; Jiang, Sheng Tetrahedron Letters, 2012 , vol. 53, # 52 p. 7121 - 7124
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Citation Number: 4
Abstract
2-Carbomethoxy-3-hydroxyquinoxaline-di-N-oxide was identified as an efficient novel ligand for the copper-catalyzed coupling reactions of aryl iodides, bromides, and chlorides with aliphatic amines and N-containing heterocycles under mild conditions. The catalytic system showed great functional-group tolerance and excellent chemoselectivity.
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