Abstract

AbstractAn efficient C(sp2) – N cross coupling of cyclic and acyclic amides with styrenyl/aryl/heteroaryl halides catalyzed by cobalt acetylacetonate in combination with copper(I) iodide, has been achieved. A library of diversely substituted cyclic and acyclic enamides have been obtained in high yields by this procedure. The reaction is stereoselective producing (E)–enamides from trans‐styrenyl halides and (Z)‐ products from cis‐halides. This procedure has been successfully employed for the coupling of other N‐heterocycles such as pyrazole, imidazole and triazole with aryl/styrenyl/heteroaryl halides to produce the corresponding N‐coupled products. A probable mechanism has been suggested.

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