Hydrazinecarboxylic acid, ethyl ester → HCID 54265624, compound

Participants

Reaction Steps

A mixture consisting of 4-(4-cyclohexylphenyl)-2-ethoxymethyleneaminothiazole (500 mg), ethyl carbazate (170 mg) and ethanol (10 ml) was stirred under ice-cooling for 1 hour and then at room temperature (about 15° C.) for 18 hours. The reaction mixture was concentrated under reduced pressure, and the crystals were collected by filtration with hexane to give ethyl 3-[4-(4-cyclohexylphenyl)-2-thiazolyliminomethyl]carbazate (515 mg, yield of 87 %). Recrystallization from dimethylforamide-water produced colorless prisms, mp of 188 to 189° C.

Provenance & Evidence