Sodium Hydroxide → 2-(4-Fluorophenyl)-4-methylpyrimidine-5-carboxylic acid
反応式
C([O:3][C:4]([C:6]1[C:7]([CH3:19])=[N:8][C:9]([C:12]2[CH:17]=[CH:16][C:15]([F:18])=[CH:14][CH:13]=2)=[N:10][CH:11]=1)=[O:5])C.[OH-].[Na+]>CO>[F:18][C:15]1[CH:14]=[CH:13][C:12]([C:9]2[N:8]=[C:7]([CH3:19])[C:6]([C:4]([OH:5])=[O:3])=[CH:11][N:10]=2)=[CH:17][CH:16]=1参加物
4
実験手順
A solution of ethyl-2-(4-fluorophenyl)-4-methylpyrimidine-5-carboxylate (1.65 g, 6.35 mmol) in MeOH (75 mL) is treated with 2 N aqueous sodium hydroxide (10 mL) and heated to reflux for 30 min. MeOH is removed in vacuo and the residue is diluted with water (50 mL). The solution is adjusted to pH ˜2 with 2 M hydrochloric acid. The precipitated is collected by filtration, washed with water and vacuum dried to afford 2-(4-fluorophenyl)-4-methylpyrimidine-5-carboxylic acid (1.3 g, 88%) as a solid. MS: 233 (M+H).