t-Butylammonium fluoride → {4-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-2,3-difluoro-5-(hydroxymethyl)phenyl}(phenyl)methanone

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Reaction Steps

tert-Butyl ammonium fluoride (435 mg, 0.002 mmol) was added in small portions to a stirred solution of {5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-4-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-2,3-difluorophenyl}(phenyl)methanone (Intermediate 20, 1 g, 0.002 mmol) in anhydrous THF (10 mL) at 0° C. and stirring was continued for 1 h with warming to room temperature. The solvent was removed and the residue was purified over a silica gel chromatography column using ethyl acetate-pet. ether gradient, providing the title compound. Yield: 450 mg, (75%)

Provenance & Evidence