Dimethylformamide → 4-(2,4-dichlorobenzoyl)-1-[3-(2-methylthio-10H-phenothiazin-10-yl)propyl]piperidine

Participants

Reaction Steps

To 75 ml of dry dimethylformamide was added 2.0 g of 10-(3-chloropropyl)-2-methylthiophenothiazine, 1.7 g of 4-(2,4-dichlorobenzoyl)piperidine, and 5.0 g of sodium bicarbonate. The reaction mixture was stirred at 90° for five hours, poured into 200 ml of water, and extracted with ethyl acetate. This extract was washed with water, dried over anhydrous magnesium sulfate, filtered, and concentrated to an oil. This oil was purified by high pressure liquid chromatography on a silica gel column, utilizing ethyl acetate/dichloromethane (1:2 by volume) as the eluent. Concentration of the appropriate fractions yielded 2.7 g of 4-(2,4-dichlorobenzoyl)-1-[3-(2-methylthio-10H-phenothiazin-10-yl)propyl]piperidine as an oil.

Provenance & Evidence