Synthesis of poly(alkyl alkynoates) from diynes, CO₂, and alkyl dihalides by a copper(I) salt catalyst

The need for a potential alternate carbon source to petroleum and the environmental concern about increasing concentration of CO₂ in the atmosphere led to an increasing interest to synthesise polymer using CO₂. In a recent study directed toward the effective utilization of CO₂, a novel catalytic reaction has been found for the synthesis of alkyl alkynoates from 1-alkynes, CO₂, and alkyl halides mediated by copper (I) salt in the presence of K₂CO₃. This paper reports a convenient synthesis of poly(alkyl alkynoates) from CO₂ applying this method.