Cyclohexanecarboxylic acid → Cyclohexyl [4-({5-[2-fluoro-3-(hydroxymethyl)phenyl]pyrimidin-2-yl}oxy)piperidin-1-yl]methanone

Participants

Reaction Steps

5-[3-({[tert-Butyl(dimethyl)silyl]oxy}methyl)-2-fluorophenyl]-2-(piperidin-4-yloxy)pyrimidine (150 mg) and cyclohexane carboxylic acid (82 mg) were mixed with DCE (3.6 ml), and WSC hydrochloride (125 mg) and HOBt (85 mg) were added thereto, followed by stirring at room temperature for 3 hours. A saturated aqueous sodium hydrogen carbonate solution and CHCl3 were added to the reaction mixture, and the organic layer was dried over Na2SO4 and concentrated under reduced pressure. The obtained residue was mixed with THF (3.6 ml), and a 1 M TBAF/THF solution (0.85 ml) was added thereto, followed by stirring at room temperature for 1 hour. EtOAc and an aqueous ammonium chloride solution were added to the reaction mixture, and the organic layer was dried over Na2SO4 and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (CHCl3/MeOH) to obtain cyclohexyl [4-({5-[2-fluoro-3-(hydroxymethyl)phenyl]pyrimidin-2-yl}oxy)piperidin-1-yl]methanone (148 mg).

Provenance & Evidence