Sodium Carbonate → Ethyl 4-[3-[1-[6-(4-fluorophenyl)-3-pyridazinyl]-4-piperidinyl]propoxy]benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of 2.1 parts of 3-chloro-6-(4-fluorophenyl)pyridazine, 2.9 parts of ethyl 4-[3-(4-piperidinyl)propoxy]benzoate, 1.1 parts of sodium carbonate and 2 parts of N,N-dimethylacetamide was stirred for 2 hours in an oil bath at 140° C. The reaction mixture was diluted with water while cooling. The precipitated product was filtered off, washed with water and dissolved in trichloromethane. The organic layer was dried, filtered and evaporated. The residue was crystallized from 2-propanol. The product was filtered off and dried, yielding 3.4 parts (73.3%) of ethyl 4-[3-[1-[6-(4-fluorophenyl)-3-pyridazinyl]-4-piperidinyl]propoxy]benzoate; mp. 160.4° C. (comp. 81).

Provenance & Evidence