in diethyl ether

in acetone T=35 - 40°C; 1.5 h;

KBr; Br2 in ethylene glycol dimethyl ether malonitrile and potassium bromide dissolved in water, bromine added at 5°C to stirred soln., dibromomalonitrile-potassium bromide complex produced was removed by filtration, washed with water, dried over P2O5under high vac.; potassium cyanide dissolved in dimethoxyethane, potassium bromide complex added, stirred for 1.5 h, heated to reflux briefly, hot soln. filtered, cooled overnight, crystn. by adding ether, filtration;

in neat (no solvent, solid phase) spontaneous decomposition in the presence of air from 241 to 666 °C;

water T=100°C; 24 h;

water T=100°C; 24 h;

hydrogenchloride in water 8 h; Heating;

sulfuric acid in diethyl ether; ethanol; water