Hydrochloric Acid → 2,4-bis(trifluoromethyl)pyrimidine-5-carboxylic Acid
反応式
C([O:3][C:4]([C:6]1[C:7]([C:16]([F:19])([F:18])[F:17])=[N:8][C:9]([C:12]([F:15])([F:14])[F:13])=[N:10][CH:11]=1)=[O:5])C.[OH-].[Na+].Cl>CCO.O>[F:15][C:12]([F:13])([F:14])[C:9]1[N:8]=[C:7]([C:16]([F:19])([F:18])[F:17])[C:6]([C:4]([OH:5])=[O:3])=[CH:11][N:10]=1参加物
6
実験手順
A solution of ethyl-2,4-bis(trifluoromethyl)pyrimidine-5-carboxylate (5.0 g, 17 mmol) and NaOH (0.72 g, 18 mmol) in EtOH (20 mL) and H2O (50 mL) was stirred at room temperature for 1 h. The solution was acidified (HCl) and the resulting solid was filtered and dried to give 2,4-bis (trifluoromethyl)-pyrimidine-5-carboxylic acid (1.5 g, 25%), m.p. 59° C., 1HNMR (DMSO-d6) δ 9.62 (s, 1H).
後処理
- filtrationthe resulting solid was filtered
- customdried
出典と根拠
- ORDレコード
- ord-bf354a962e6e470eaaf32f7cad0bfba2
- 出典データセット
- uspto-grants-1998_09
- 特許番号
- US05811428
反応ノート
読み込み中…