ethyl 3-amino-5-chloro-1H-indole-2-carboxylate

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Heat at 70° C. and stir a mixture of 3-amino-5-chloro-1-(2,2,2-trifluoro-ethanoyl)-1H-indole-2-carboxylic acid ethyl ester (3.34 g, 10 mmol), ethanol (50 mL), and potassium carbonate (1.50 g, 10.85 mmol). After 1.75 h, add water (20 mL), and after another hour add additional potassium carbonate (0.58 g, 4.20 mmol). Cool the reaction mixture to ambient temperature and partition between water/ethyl acetate. Separate the organic layer, dry over MgSO4, filter and concentrate to afford 1.70 g of the title compound as a solid. MS 239(M+H). Cool the reaction mixture to ambient temperature partition between water/ethyl acetate Separate the organic layer dry over MgSO4 filter concentrate