Trifluoroacetic acid → HCID 57843470, compound

Participants

Reaction Steps

To a solution of 1,1-dimethylethyl 3-oxo-4-(7-{5-[(phenylsulfonyl)amino]-3-pyridinyl}-2-quinoxalinyl)-1-piperazinecarboxylate (0.21 mmol) in acetonitrile (4 ml) was added concentrated trifluoroacetic acid (4 ml). The reaction stirred at ambient temperature for 1 hour and was then concentrated to an orange oil. The residue was neutralized with saturated sodium bicarbonate solution upon which a precipitate formed. The precipitate was dissolved in ethyl acetate and crashed out of solution with hexanes, which was filtered and dried to afford the title compound (66 mg, 67%) as an off-white solid. MS(ES)+ m/e 461.2 [M+H]+.

Provenance & Evidence