Hydrazinecarboxylic acid, ethyl ester → Ethyl 3-(5-methyl-6-phenyl-3-pyridazinyl)carbazate

Participants

Reaction Steps

A 10.0 g. portion of 5-methyl-6-phenyl-3-chloropyridazine, 10.02 g. of ethyl carbazate and 150 ml. of butyl alcohol are stirred at reflux for 4 hours. The reaction mixture is concentrated free of butyl alcohol and the concentrate is placed in cold water containing a small amount of ethyl and scratched. The resulting solid is filtered, washed with water, recrystallized from a mixture of chloroform and petroleum ether and dried in vacuo giving a white solid, mp 143°-145° C.

Provenance & Evidence