Triethylamine → 2,2,2-Trifluoro-1-(9-(3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)ethanone

関与物質

反応条件

反応手順

A solution of 2-(3-(bromomethyl)phenyl)ethanol (example 6, step a) (0.223 g) dissolved in acetonitrile (1 mL) was added dropwise to a stirred solution of triethylamine (0.318 mL) and 2,2,2-trifluoro-1-(1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)ethanone trifluoroacetate (example 12, step d) (0.38 g) in acetonitrile (2 mL) at 20° C., over a period of 2 minutes. The resulting mixture was stirred at 20° C. for 3 hours. The solvent was evaporated off and residue partitioned between dichloromethane and water, the aqueous layer was re-extracted twice with DCM and the combined organics were dried over sodium sulfate, filtered and the solvent evaporated under reduced pressure. The crude product was purified by flash silica chromatography eluting with 6% methanol and 1% triethylamine in dichloromethane. Pure fractions were evaporated to dryness to afford the subtitled compound. Yield 0.260 g.

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