Sodium Hydroxide → HCID 21104327, compound

Participants

Reaction Steps

To a suspension of 4-[2-(5-chloro-2-fluoro-phenyl)-5-methyl-6,7-dihydro-5H-cyclopentapyrimidin-4-ylamino]-nicotinic acid ethyl ester (180 mg, 0.42 mmol, 1 eq) in MeOH (5 ml) was added a 1 N NaOH(aq) solution (634 μl, 0.63 mmol, 1.5 eq) and the reaction mixture was heated to reflux for 1 h. The solution was cooled to r.t. and concentrated in vacuo. Water (20 ml) was added to the crude material and the aqueous layer was acidified to pH 4. The solid was filtered, washed with water (2×5 ml) and dried overnight to give 4-[2-(5-chloro-2-fluorophenyl)-5-methyl-6,7-dihydro-5H-cyclopentapyrimidin-4-ylamino]-nicotinic acid, compound of formula (49) (160 mg, 95%) as a white solid.

Provenance & Evidence