2,5-Dimethoxytetrahydrofuran → HCID 19608189, compound

Participants

Reaction Steps

To a solution of 5-amino-1-[4-(2-methylbenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.6 g) in acetic acid (10 ml) is added dropwise 2,5-dimethoxytetrahydrofuran (0.19 ml), and the mixture is refluxed for 1 hour. The reaction solution is concentrated and the resulting residue is purified by silica gel column chromatography (eluent; dichloromethane:methanol=50:1), and recrystallized from ethyl acetate/n-hexane to give 5-(1-pyrrolyl)-1-[4-(2-methylbenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.31 g) as colorless prisms, m.p. 208°-210° C.

Provenance & Evidence