Photolysis of pyridazinium dicyanomethylides
Abstract
Irradiation of pyridazinium dicyanomethylide gave 3-(2,2-dicyanovinyl)pyrazoles (2) and 3-(2,2-dicyanovinyl)cyclopropenes (3) formed it is believed via a mechanism similar to that operating in the photolysis of pyridazine N-oxides.