Chloroform → HCID 19814216, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3.5 parts of N-(6-chloro-3-pyridazinyl)acetamide, 3.6 parts of 1-(3-methylphenyl)piperazine and 2.8 parts of potassium carbonate was stirred for 7 hours in an oil bath at 160° C. After cooling, trichloromethane and water were added. The layers were separated. The organic layer was dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (97:3 by volume) as eluent. The second fraction was collected and the eluent was evaporated. The residue was converted into the hydrochloride salt in 2-propanol and 2-propanone. The salt was filtered off and dried, yielding 0.5 parts (6.6%) of 6-[4-(3-methylphenyl)-1-piperazinyl]-3-pyridazinamine dihydrochloride; mp. 178.5° C. (compound 220).

Provenance & Evidence