APPLICATION OF TRICHLOROETHYLENE AS THE PRECURSOR OF DICHLOROACETYLENE UNDER PTC CONDITIONS

Trichloroethylene easily forms trichlorovinyl anion and then dichloroa cetylene under PTC conditions. Owing to the transformation of trichlor oethylene to dichloroacetylene, we can react it with nucleophilic reag ents under mild conditions. Under PTC conditions trichloroethylene rea cts with aliphatic amines and heterocyclic compounds (e.g., imidazole, pyrazole, and carbazole) to form amides and dichlorovinyl derivatives , respectively. The mechanism of the reactions is discussed in the pap er.