2-Acetamido-thiazole-5-sulfonic acid (2-hydroxy-1,1-dimethyl-ethyl)-amide → 2-Amino-thiazole-5-sulfonic acid (2-hydroxy-1,1-dimethyl-ethyl)-amide

Participants

Reaction Conditions

Reaction Steps

A stirred suspension of 2-acetamido-thiazole-5-sulfonic acid (2-hydroxy-1,1-dimethyl-ethyl)-amide (0.68 g, 2.32 mmol) in 6N hydrochloric acid (20 ml) was heated for 2 h at 80° C., evaporated., and saturated NaHCO3 solution (30 ml) was added. The mixture was extracted with ethyl acetate (3×50 ml), the combined organic layers washed with brine (30 ml), dried (MgSO4) and evaporated. The crude product was further purified by column chromatography on silica gel (dichloromethane/MeOH/NH4OH 80:10:1) to yield the title compound (0.42 g, 72%) as a colorless oil. MS (ISP) 250.0 [(M−H)−].

Provenance & Evidence