Carboxylation of terminal alkynes promoted by silver carbamate at ambient pressure

Abstract

Transition metal carbamates constitute a class of compounds with unique properties, however their catalytic potential has been sparingly explored so far. The easily available silver N,N-dimethylcarbamate, Ag(O₂CNMe₂), worked as a catalyst in the carboxylation reaction of terminal alkynes with CO₂ at atmospheric pressure. Different reaction parameters (solvent, base, temperature, time and the amount of catalyst) were investigated in order to establish the optimal conditions.