Diisopropylethylamine → (S)-N-(5-(4-chlorophenyl)-6-(1,1,1-trifluoropropan-2-yloxy)pyridin-3-yl)pyridazine-3-carboxamide

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Reaction Steps

Pyridazine-3-carboxylic acid (CAN 2164-61-6; 43.1 mg, 347 μmol) was suspended in DMF (1.0 mL). TBTU (112 mg, 347 μmol), ethyldiisopropylamine (102 mg, 131 μl, 789 μmol,) and 5-(4-chloro-phenyl)-6-((S)-2,2,2-trifluoro-1-methyl-ethoxy)-pyridin-3-ylamine (0.100 g, 316 μmol) were added and the reaction mixture was stirred at room temperature for 1 h. The rection mixture was extracted with ethyl acetate and 1M citric acid solution; the organic phase was dried with MgSO4 and concentrated in vacuo. The crude material was purified by flash chromatography (silica gel, 10 g, 10% to 50% ethyl acetate in heptane) to give 0.11 g (83%) of the title compound as white solid; MS (EI) 423.1 (M+H)+.

Provenance & Evidence