Hydrochloric Acid → 1-[4-((2R,4S)-4-{(3,5-bis-trifluoromethyl-benzyl)-[5-(1H-pyrazol-4-yl)-pyrimidin-2-yl]-amino}-2-ethyl-pyrrolidin-1-yl)-5-chloro-pyrimidin-2-yl]-piperidine-4-carboxylic acid

Participants

Reaction Steps

A 15 ml round-bottom flask is charged with 1-[4-((2R,4S)-4-{(3,5-bis-trifluoromethyl-benzyl)-[5-(1H-pyrazol-4-yl)-pyrimidin-2-yl]-amino}-2-ethyl-pyrrolidin-1-yl)-5-chloro-pyrimidin-2-yl]-piperidine-4-carboxylic acid ethyl ester, 2N LiOH (0.4 ml, 0.8 mmol) THF (0.5 ml) and MeOH (1 ml). The mixture is then stirred at rt for 1 hour. PH is adjusted to 6 using 1 N HCl and resulted solution is extracted with EtOAc. The organic layer is dried over Na2SO4 and removal of solvent, purification with reverse phase column give 1-[4-((2R,4S)-4-{(3,5-bis-trifluoromethyl-benzyl)-[5-(1H-pyrazol-4-yl)-pyrimidin-2-yl]-amino}-2-ethyl-pyrrolidin-1-yl)-5-chloro-pyrimidin-2-yl]-piperidine-4-carboxylic acid (13 mg, 0.017 mmol, 20% for 3 steps).

Provenance & Evidence