HCID 66788528, compound → HCID 66789450, compound

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Reaction Steps

A solution of 4-(5-chloro-2-methoxy-benzenesulfonyl)-6-(4-ethoxycarbonyl-phenylcarbamoyl)-3,4-dihydro-2H-quinoxaline-1-carboxylic acid tert-butyl ester (95 mg, 0.15 mmol) in trifluoroacetic acid (2 mL) was stirred at room temperature 2 hours. The volatiles were removed and the residue was purified by trituration in dichloromethane. 4-{[4-(5-Chloro-2-methoxy-benzenesulfonyl)-1,2,3,4-tetrahydro-quinoxaline-6-carbonyl]-amino}-benzoic acid ethyl ester was obtained as a white solid, 61 mg (76%), MS (ISP): m/e=530.3, 532.3 (M+H+.).

Provenance & Evidence