Аннотация:
The kinetic (free activation energies) and thermodynamic factors, which ensure mild conditions for the ethynylation of imines with acetylenes, have been established by quantum chemical calculations using B2PLYP/6-311+G**//B3LYP/6-31+G*. According to the calculations, the alternative route of superbase catalyzed C-vinylation requires harsher reaction conditions as compared to the ethynylation one.