Structure of the 2:1 adduct of dimethyl acetylenedicarboxylate and dehydronuciferine: a novel tandem michael-1,3-dipolar addition reaction
作者:Mary D. Menachery、Patrick Carroll、Michael P. Cava
DOI:10.1016/s0040-4039(00)81356-8
日期:1983.1
The structure of a minor 2:1 addition product of dimethylacetylenedicarboxylate and dehydronuciferine has been shown to be the spiroannelated aporphine by X-ray crystallography. Its formation involves a Michael addition followed in sequence by a proton shift and a 1,3-dipolar addition.