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

Participants

Reaction Conditions

Reaction Steps

Polymer supported cyanoborohydride (191 mg, 0.82 mmol) was added to a solution of 1-(4-methyltetrahydro-2H-pyran-4-yl)-4-piperidinone (D12, 87 mg, 0.44 mmol), 2-amino-4-(trifluoromethyl)phenol (D7, 74 mg, 0.42 mmol, 4.3 mmol/g) and acetic acid (0.12 mL, 2.09 mmol) in DCM (2.5 mL). The mixture was heated by microwave at 100° C. for 10 min before being filtered and concentrated by rotary evaporation to give a yellow oil, which was purified via flash column chromatography (silica, DCM to 0.5% NH3/9.5% MeOH/90% DCM) to give 2-{[1-(4-methyltetrahydro-2H-pyran-4-yl)-4-piperidinyl]amino}-4-(trifluoromethyl)phenol (D14, 89 mg, 60%) as an off-white solid.

Provenance & Evidence