Hong Jiang, Wei Wang, Xiang-shan Wang
2012
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Abstract
Abstract A series of ethyl 5-aryl-1,2-dihydroanthra[2,1-c][2,7]naphthyridine-3(4H)-carboxylate derivatives was prepared by a three-component reaction of aromatic aldehyde, anthracen-2-amine and ethyl 4-oxopiperidine-1-carboxylate using iodine as catalyst. This iodine-catalyzed procedure has the advantages of mild reaction conditions, good yields, operational simplicity and metal-free catalyst.