Catalytic and non-catalytic addition of aromatic amines to terminal acetylenes in the presence of mercury(II) chloride and acetate

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Abstract
The addition of aromatic amines to terminal acetylenes in the presence of catalytic amounts of mercury(II) chloride gives imines, enamines, and 1,2,3,4-tetrahydroquinoline derivatives; mercury(II) acetate shows considerably less catalytic activity and may be used for the non-catalytic preparation of imines, enamines, NN′-disubstituted acetamidines, and NN-disubstituted acetamides.