4-Fluorophenyl isocyanate → Cis-(+)-2,3-dihydro-5-[2-(dimethylamino)ethyl]-3-[(4-fluoro)-phenylcarbamoyloxy]-2-(4-methoxyphenyl)-1,5-benzothiazepine-4(5H)-one

Participants

Reaction Steps

10 Grams (0.268 mole) of the compound prepared under (A) were dissolved in 100 ml of anhydrous benzene and subsequently added with 3.02 ml (0.0269 mole) of 4-fluoro-phenylisocyanate, then the resulting solution was stirred on an oil bath at 30°-35° C. for 7 hours. After evaporating the solvent, the residue was taken up with anhydrous diethyl ether and the obtained white precipitate was recovered by filtration.

Provenance & Evidence