Valeryl chloride → HCID 21246379, compound

Participants

Reaction Steps

6.0 g (28.9 millimoles) of 1,4-dihydro-4-imino-1-phenylpyridazine hydrochloride in 40 ml of valeryl chloride were kept at 120° C. for 20 hours, while stirring. The mixture was cooled and then filtered under suction, and the residue was washed with acetone and recrystallized first from ethanol/methyl tert.-butyl ether and then from ethanol/acetone. 3.4 g (40% of theory) of 1,4-dihydro-1-phenyl-4-(valerylimino)-pyridazine hydrochloride were isolated as pale yellowish crystals of melting point 180°-182° C.

Provenance & Evidence