HCID 87369755, compound → 5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-4-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-2,3-difluorobenzonitrile

Participants

Reaction Conditions

Reaction Steps

A mixture of (E)-1-{5-({[tert-butyl(diphenyl)silyl]oxy}methyl)-4-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-2,3-difluorophenyl}-N-hydroxymethanimine (Intermediate 5, 8.0 g, 14.8 mmol) and acetic anhydride (10 mL) was stirred at 130° C. for 12 hours. the reaction mixture cooled to room temperature and concentrated, and the residue was purified over a silica gel flash column using a gradient of ethyl acetate in pet. ether to give the title compound as yellow solid. Yield: 6.5 g, (85%).

Provenance & Evidence