Copper-catalysed decarboxylative alkynylation-cyclization reaction of propargylic cyclic carbonates with nitrile imines to access tetrasubstituted pyrazoles
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Herein, we report a robust copper-catalyzed decarboxylative alkynylation-cyclization cascade that enables the efficient synthesis of diverse tetrasubstituted pyrazoles under mild conditions, addressing the long-standing regioselectivity challenge plaguing pyra... ...
