反应详情

3-Acetyl-7-chlorosulfonyl-8-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine (2 g) was stirred with 10 ml of 40% aqueous methylamine, then was treated with hydrochloric acid and concentrated in vacuo to give 8-methoxy-7-(N-methylsulfamoyl)-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride. This 8-methoxy-7-(N-methylsulfamoyl) compound was treated with boron tribromide in methylene chloride and then with methanol to give 8-hydroxy-7-(N-methylsulfamoyl)-2,3,4,5-tetrahydro-1H-3-benzazepine hydrobromide, m.p. 130°-135° C.

1. concentrationconcentrated in vacuo