Silver-catalyzed chemoselective annulation of propargyl amines with alkynes for access to pyridines and pyrroles

The annulation of propargyl amines with electron-deficient alkynes in the presence of silver salts affording pyridines and pyrroles has been developed. The chemoselective [4+2] or [3+2] annulation approach to pyridines or pyrroles depends on the structures of propargyl amines and the different reaction conditions.

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