Tetrahydrofuran → HCID 341913, compound

Participants

Reaction Steps

To a solution of 6.4 g of 1,3-dihydro-5-(2-chlorophenyl)-7-chloro-2H-1,4-benzodiazepine-2-thione in a solvent mixture comprising 34 ml of a 10% aqueous potassium hydroxide and 2.5 ml of tetrahydrofuran is added 4.5 g of 1-chloro-2-morpholinoethane hydrochloride, and the resulting mixture is stirred at room temperature for 3 hours. The reaction mixture is diluted with water and extracted with ethyl acetate. The extract is washed with water, dried over magnesium sulfate and, thereafter, the solvent is distilled off under reduced pressure to obtain an oily 2-(2-morpholinoethylthio)-5-(2-chlorophenyl)-7-chloro-3H-1,4-benzodiazepine. The oily product thus obtained is treated, according to usual procedure, with fumaric acid and recrystallized from isopropyl alcohol to obtain 7.5 g of 2-(2-morpholinoethylthio)-5-(2-chlorophenyl)-7-chloro-3H-1,4-benzodiazepine fumarate, m.p. 191°-193° C.

Provenance & Evidence