Abstract Enamines derived from β-tetralone and morpholine and dimethylamine (Ia, b), react with carbenes IIa, b to give 1: 1 adducts IIIa, b and ring-insertion products IVa, b, respectively. The reaction of pyrrolidine enamine Ic with the carbenes leads to the formation of new types of products which have been identified as VI and VII. Possible mechanisms for the formation of the reaction products are presented.
