Isopropylamine → 2-{(E)-2-[3-(5-Fluoro-pyridin-2-yl)-5-methyl-isoxazol-4-yl]-vinyl}-4-methyl-thiazole-5-carboxylic acid isopropylamide

Participants

Reaction Steps

To a solution of 2-{(E)-2-[3-(5-fluoro-pyridin-2-yl)-5-methyl-isoxazol-4-yl]-vinyl}-4-methyl-thiazole-5-carboxylic acid (28 mg, 0.085 mmol) in DMF (0.5 mL) were added 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (30 mg, 0.085 mmol), N,N-diisopropyl ethyl amine (72 μL, 0.423 mmol) and isopropylamine (8 μL, 0.40 mmol). The resulting reaction mixture was stirred for 1 h. The reaction mixture was then evaporated and purification by chromatography (silica, 0 to 100% ethyl acetate in heptane) afforded the title compound (24 mg, 74%) as a white solid after trituration from water. MS: m/e=387.2 [M+H]+.

Provenance & Evidence