Acrylamidines were synthesized via the copper-catalyzed three-component reaction of propargyl acetates, sulfonyl azides and amines, which are readily accessible materials. The synthesized N,N′-bis(aryl)amidines could be converted into 2-styrylbenzoimidazoles by iodobenzene-catalyzed oxidative C–H amination using m-CPBA as a terminal oxidant.
J. Wang, P. Lu and Y. Wang, Org. Chem. Front., 2015, 2, 1346 DOI: 10.1039/C5QO00196J
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