HCID 21108201, compound → HCID 9824039, compound

Participants

Reaction Conditions

Reaction Steps

Concd. sulfuric acid (4 drops) was added to a solution of 3-[1-[(4′-chloro[1,1-biphenyl]-4-yl)carbonyl]-1,2,3,4-tetrahydro-6-quinolinyl]-3-hydroxy-N,N-dimethyl-1-propanamine (0.1 g) obtained in Example 4 in acetic acid (1 mL), and the mixture was stirred at 50 to 55° C. for 3 hours. After the solvent was distilled away under reduced pressure, the residues were made basic with 2 N aqueous sodium hydroxide and then extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled away under reduced pressure. The resultant residues were purified by alumina column chromatography (developing solvent; ethyl acetate) and crystallized from diethyl ether, whereby the title compound (75 mg) was obtained as colorless powder with a mp of 162 to 164° C.

Provenance & Evidence