The reaction of α-diazocarbonyl compounds with 1, 1-diphenylmethanimine in the presence of Cu (acac) 2 afforded the corresponding N-substituted imines in general together with pyrrolidine and 1, 4, 6-dioxazocine derivatives (in the reaction of α diazo-4- chloroacetophenone) and 1, 1-diphenyl-2-(4-nitrobenzoyl) ethylene (in the reaction of α- diazo-4-nitroacetophenone) through azomethine ylides.
