Hydrochloric Acid → 5-Chloro-6-{4-[6-(4-fluoro-phenyl)-2-(2-methyl-pyrrolidin-1-yl)-pyrimidin-4-yl]-piperazin-1-yl}-nicotinic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-6-{4-[6-(4-fluoro-phenyl)2-(2-methyl-pyrrolidin-1-yl)-pyrimidin-4-yl]-piperazin-1-yl}-nicotinic acid ethyl ester (427 mg, 0.813 mmol) in THF, add water dropwise until the cloudiness almost persists. To this mixture add LiOH.H20 (350 mg, 8.13 mmol) followed by a small amount of EtOH. Heat the mixture at 55° C. for 2 h, and then concentrate under reduced pressure. Add a small amount of water to the residue, followed by 8.13 mmol of HCl (3M solution). Adjust the final pH to 4 and collect the off-white solid via filtration. Wash the solid with water and dry to afford the title compound.

Provenance & Evidence