Phenethylamine → trans-3-(2-indolecarboxamido)-4-oxo-2-phenyl-N-(2-phenylethyl)-2,3,4,5-tetrahydro 1,5-benzothiazepine-5-acetamide

Participants

Reaction Steps

While a mixture of 2 g of trans-3-(2-indolecarboxamido)-4-oxo-2-phenyl-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetic acid, 20 ml of dichloromethane and 0.2 g of 2-phenylethylamine and tri-n-butylamine is stirred at room temperature, 1.2 g of 2-chloro-N-methylpyridinium iodide is added to the mixture. The mixture is stirred at room temperature for 18 hours. After chloroform is added to the reaction mixture, the mixture is washed with a 5% aqueous solution of hydrochloric acid, a saturated aqueous solution of sodium hydrogencarbonate and a saturated solution of sodium chloride. Thereafter, the mixture is dried, and the solvent is distilled off under reduced pressure. The obtained residue is separated and purified by silica gel column chromatography (eluent: chloroform), and recrystallized from ethanol to give 0.7 g of trans-3-(2-indolecarboxamido)-4-oxo-2-phenyl-N-(2-phenylethyl)-2,3,4,5-tetrahydro 1,5-benzothiazepine-5-acetamide 1/2hydrate, m.p. 157°-163° C.

Provenance & Evidence