Hydrochloric Acid → HCID 10923302, compound

Participants

Reaction Steps

A solution of N-(2-hydroxy-3-methoxyphenyl)-2-bromo-5-methyl-3-thiophenecarboxamide (2.30 g) and sodium methoxide (549 mg) in N,N-dimethylformamide (12 ml) was stirred under reflux with heating for 19 hours. The reaction system was cooled to room temperature, and the reaction mixture was poured into water (50 ml). The mixture was neutralized with hydrochloric acid, extracted twice with chloroform and washed with water. The organic layer was dried over sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent hexane:ethyl acetate=1:1) to give 2-methyl-9-methoxythieno[2,3-b][1,5]benzoxazepin-4(5H)-one (1.87 g).

Provenance & Evidence