Water → HCID 12090224, compound

Participants

Reaction Steps

Under an atmosphere of nitrogen, 0.131 g (0.96 mmol) of 3-trifluoromethylpyrazole was initially charged in 5 ml of dimethylacetamide, and 0.033 g (1.1 mmol) of sodium hydride (80%) was added at 0° C. The mixture was allowed to warm to room temperature, and 0.250 g (0.88 mmol) of 3-fluoro-5-(1-methyl-3-trifluoromethylpyrazol-5-yloxy)benzonitrile was added, the mixture was heated at 140° C. for 8 h and cooled to room temperature, water was added to the reaction solution and the solution was stirred for a number of minutes. The mixture was extracted twice with heptane/ethyl acetate (1:1) and twice with ethyl acetate. The combined phases were washed with water and then dried over magnesium sulfate, filtered and concentrated. Column chromatography of the crude product gave 0.240 g of 3-(1-methyl-3-trifluoromethylpyrazol-5-yloxy)-5-(3-trifluoromethylpyrazol-1-yl)benzonitrile in the form of white crystals of melting point of 116-117° C.

Provenance & Evidence