Some trifluoromethyl group substituted ethynylfurans were prepared according to the method of Okuhara. However, dichlorofluorovinylation of lithiated 2,3-bis(trifluoromethyl)- furan did not undergo so smoothly because of the electron- withdrawing trifluoromethyl groups and the initially substituted dichlorofluorovinyl group. Thermal, γ-ray induced, or oxidation polymerizations were investigated, and