Acetic Acid → HCID 69347098, compound

Participants

Reaction Steps

The solution of 5-(2,4-difluoro-phenoxy)-6-methoxy-quinoline in glacial acetic acid containing 4 ml hydrogen peroxide was stirred at 80–85° C. for 18 hours. After cooling the reaction mixture was neutralized with aqueous ammonia, and the resultant precipitate was filtered and washed with water. The aqueous layer was extracted with dichloromethane, and the organic layer was dried (MgSO4). Evaporation gave 1.3 g (68%) of 5-(2,4-difluoro-phenoxy)-6-methoxy-quinoline N-oxide as a beige crystalline material.

Provenance & Evidence