Water → 3,3-Dimethyl-4-[2-(4-nitro-phenyl)-6-oxo-4-thioxo-6H-1-oxa-3b,5-diaza-cyclopenta[a]pentalen-5-yl]-butyric acid

Participants

Reaction Conditions

Reaction Steps

Compound 7 (300 mg, 0.66 mmol) was dissolved in trifluoroacetic acid (TFA, 9 ml). Water (3 ml) was added and the resulting mixture was heated at 90° C. for 16 hours. The reaction mixture was then filtered, washed with ethanol and the solvents were evaporated under reduced pressure to give Compound 8 (234 mg, 83% yield) as an orange solid.

Provenance & Evidence