Sodium Iodide → HCID 14989359, compound

Participants

Reaction Steps

To a stirred solution of 3.0 parts of 3-chloro-6-[4-(3-chloropropyl)-1-piperidinyl]-pyridazine in 80 parts of acetonitrile were added 2.1 parts of sodium iodide. The reaction mixture was stirred for 2 hours at reflux temperature. After cooling, a mixture of 2.2 parts of 2-chloro-4-methoxyphenol and 3.8 parts of potassium carbonate was added to the mixture and the whole was stirred for 2 days at reflux temperature. The reaction mixture was evaporated and the residue was taken up in water. The product was extracted with dichloromethane. The extract was dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (99:1 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from 2-propanol. The product was filtered off and dried at 70° C., yielding 1.8 parts (41.3%) of 3-chloro-6-[4-[3-(2-chloro-4-methoxyphenoxy)propyl]-1-piperidinyl]pyridazine; mp. 101.0° C. (comp. 141).

Provenance & Evidence