HCID 178426084, compound → HCID 178423904, compound

Participants

Reaction Steps

[(6-Chloro-4-hydroxy-8-methyl-2-oxo-2H-thiochromene-3-carbonyl)-amino]-acetic acid (95 mg, 0.29 mmol) was dissolved in 1N sodium hydroxide (1.16 mL) and water (1.84 mL). 10% Palladium on carbon (9.5 mg) was added and the solution was vacuum purged and treated with hydrogen gas (1 atm). The reaction stirred overnight (18 h) at ambient temperature and the crude mixture was filtered through Celite® and the filter cake was washed with 1N sodium hydroxide. The aqueous phase was acidified to pH 3 with 1N hydrochloric acid and the product was collected by filtration to give [(4-hydroxy-8-methyl-2-oxo-2H-thiochromene-3-carbonyl)-amino]-acetic acid (75 mg, 88%).

Provenance & Evidence