Sodium Hypochlorite → HCID 69134220, compound

Participants

Reaction Steps

3-[(2,4-difluoro-benzimidoyl)-amino]-4-methoxy-benzoic acid methyl ester (9.5 g, 29.66 mmol) obtained in step 1 was dissolved in 50% methanol and 5% NaOCl (53 ml, 35.71 mmol) was added dropwise thereto at room temperature. After 5 min, Na2l CO3 (6.29 g, 59.34 mmol) was added dropwise thereto and refluxed for 5 min. The resulting solution was cooled to room temperature, extracted with ethyl acetate, and the extract was concentrated under a reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound (3.50 g, 11.0 mmol) in a yield of 37%.

Provenance & Evidence