Water → HCID 67288909, compound

Participants

Reaction Steps

60% sodium hydride (0.219 g, 5.71 mmol) was added to a solution of 2,2,2-trifluoroethanol (0.257 ml, 3.57 mmol) in N,N,N′,N′,N″,N″-hexamethylphosphoric triamide (6 ml) at 0 oC and stirred for 1 hour. Then 3,5-difluoropicolinonitrile (1.0 g, 7.1 mmol) in N,N,N′,N′,N″,N″-hexamethylphosphoric triamide (4 mL) was added to the reaction mixture and stirred at room temperature for 20 hours. Then 2,2,2-trifluoroethanol (0.257 ml, 3.57 mmol) and 60% sodium hydride (0.22 g, 5.7 mmol) were added to the reaction mixture and stirred at room temperature for 3 hours. After reaction, the mixture was poured into water, and the aqueous phase was extracted with ethyl acetate. The organic layer was dried over magnesium sulfate and concentrated in vacuo. The residue was purified by column chromatography on silica gel eluting with hexane/ethyl acetate (6:1-4:1) to give 398 mg (25% yield) of the title compound as a oily solution:

Provenance & Evidence