Abstract
Concatenation of copper-catalyzed alkyne carboxylation–alkylation and copper-catalyzed alkyne–azide cycloaddition gives a novel sequentially copper-catalyzed alkyne carboxylation–propargylation–azide cycloaddition (CuACPAC) process furnishing 1,2,3-triazolylmethyl arylpropiolates via a consecutive four-component synthesis. The CuACPAC can be expanded to a five-component synthesis of 1,2,3-triazolylmethyl 3-amino arylacrylates by a concluding Michael addition in the same pot.
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