K. Takagi, A. Mizuno, H. Yoshimura
1990
Citations
0
Influential Citations
5
Citations
Journal
Dyes and Pigments
Abstract
Abstract Electrochemical reactions of 2,2-dicyanostyrenes gave regioselectively 1-cyanated products in good yield using tetraethylammonium cyanide (TEAC) as the supporting electrolyte. The reaction proceeded via Michael addition followed by electrolytic oxidation of the adduct at the anode. 2,2-Dicyano- and 1,2,2-tricyanostyrenes showed a novel halochromism induced by the acid-base equilibrium affected by the concentration of the dyes in solution.