Acetic Acid → 2-Fluoro-4-methyl-6-{[1-(4-methyltetrahydro-2H-pyran-4-yl)-4-piperidinyl]amino}phenol

Participants

Reaction Steps

2-Amino-6-fluoro-4-methylphenol (D16, 49 mg, 0.34 mmol) was dissolved in DCM (3 mL) and 1-(4-methyltetrahydro-2H-pyran-4-yl)-4-piperidinone (D12, 68 mg, 0.34 mmol), polymer supported cyanoborohydride (160 mg, 0.69 mmol, 4.3 mmol/g) and acetic acid (0.10 mL, 1.72 mmol) were all added at room temperature. The mixture was reacted at 100° C. in the microwave for 10 min. The mixture was then cooled to room temperature, filtered and the solvent was removed under vacuum to give the crude product, an orange oil, which was purified via flash column chromatography (silica, DCM to 0.5% NH3/9.5% MeOH/90% DCM) to give 2-fluoro-4-methyl-6-{[1-(4-methyltetrahydro-2H-pyran-4-yl)-4-piperidinyl]amino}phenol (D17, 51 mg, 42%) as a white solid.

Provenance & Evidence