Water → HCID 21881989, compound

Participants

Reaction Steps

To a solution of 3-(1,1-dimethylethyl)1H-pyrazole (0.22 g, 1.8 mmol) in N,N-dimethylformamide (20 mL) under nitrogen at room temperature was added 60% sodium hydride in mineral oil (90 mg, 2.16 mmol). After the addition, the mixture was stirred at room temperature for ˜15 minutes, and 3-hydroxy-1-[3-(trifluoromethyl)phenyl]-2-pyrrolidinone methanesulfonate (0.5 g, 1.8 mmol) was added. The resulting reaction mixture was stirred at room temperature overnight and then poured into water (˜100 mL). The aqueous layer was extracted twice with ethyl acetate (˜30 mL each; brine solution was added to separate the two layers). The organic extracts were combined, dried over MgSO4 and filtered. The filtrate was concentrated and the residue purified by column chromatography (silica gel, ˜20% ethyl acetate/80% hexanes) to give the title compound, a compound of this invention, as a yellow solid (300 mg) melting at 76–78° C.

Provenance & Evidence