Cyclopropylmethoxide → 6-(4-Chloro-phenyl)-5-cyclopropylmethoxy-3-trifluoromethyl-pyrazine-2-carboxylic acid (2-cyclopropyl-2-hydroxy-propyl)-amide

To a solution of 0.048 g 5-bromo-6-(4-chloro-phenyl)-3-trifluoromethyl-pyrazine-2-carboxylic acid (2-cyclopropyl-2-hydroxy-propyl)-amide in 0.3 ml dimethylsulfoxide was added 0.2 ml of a 1M solution of cyclopropylmethoxide in dimethylsulfoxide and the mixture was stirred at room temperature for 30 min. The orange reaction mixture was partitioned between 10% citric acid and ethyl acetate. The phases were separated and the organic phase was purified by chromatography on silica gel with heptane: ethyl acetate=9:1 to 1:1 to yield 0.015 g of the title compound as white solid. MS (M+H) at 468.3.