Water → HCID 19823695, compound

Participants

Reaction Steps

A solution of 3-[1-(4-chlorophenyl)cyclobutyl]-3-dimethylaminopropan-1-ol (3 g prepared as described in Example 211) in tetrahydrofuran (50 ml) was added to a stirred suspension of sodium hydride (1.02 g of a 50% dispersion in mineral oil) in tetrahydrofuran (60 ml). The mixture was stirred at ambient temperature for one hour and a solution of 4-vinylpyridine (5.74 ml) in tetrahydrofuran (10 ml) was added and the mixture allowed to stand for 72 hours at ambient temperature and then heated under reflux for 48 hours. Water was added dropwise to the cooled reaction mixture which was then extracted with ether. The extracts were washed, dried and evaporated togive an oil which was dissolved in ether, filtered and the filtrate evaporated. The residue was heated at 95° C./0.5 mm Hg for 2 hours and then purified by flash chromatography on a silica column using a 9:1 mixture of light petroleum (b.p. 60°-80° C.) and propan-2 -ol as eluant followed by high performance liquid chromatography. The product was heated at 80° C./20 mm Hg for 5 hours to leave N,N-dimethyl-1-[1-(4-chlorophenyl)cyclobutyl]-4-[2-(4-pyridyl)ethoxy]butylamine as an oil the boiling point of which was not determined.

Provenance & Evidence