Ethyl Acetate → HCID 86654953, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-benzyloxycarbonyl-3-[3-(4-methoxycarbonylthiophen-3-yl)-ureido]-5-trifluoromethyl-1H-indole-2-carboxylic acid tert-butyl ester 5G (5.29 g, 8.57 mmol) in anhydrous methanol (50 mL) was added a 0.5 M solution of sodium methoxide (25 mL, 12.5 mmol). The reaction mixture was heated in a microwave reactor at 100° C. for 10 minutes. Ethyl acetate (500 mL) was added and the organic layer was washed with 1 N hydrochloric acid and brine. The organic layer was dried over sodium sulfate. The organic solvent was evaporated under reduced pressure. The crude product was purified by flash column chromatography to provide 3-(2,4-dioxo-1,2-dihydro-4H-thieno[3,4-d]pyrimidin-3-yl)-5-trifluoromethyl-1H-indole-2-carboxylic acid tert-butyl ester 5H (3.36 g, 7.45 mmol).

Provenance & Evidence