Lithium hydroxide, monohydrate → 6-(4-{[3,5-Bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperazin-1-yl)pyridine-2-carboxylic acid

HRID 403206노트

반응식

HRID 403206 반응식
[F:1][CH:2]([F:31])[C:3]1[CH:7]=[C:6]([CH:8]([F:10])[F:9])[N:5]([CH2:11][C:12]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[N:25]=[C:24]([C:26]([O:28]CC)=[O:27])[CH:23]=[CH:22][CH:21]=3)[CH2:16][CH2:15]2)=[O:13])[N:4]=1.O.[OH-].[Li+]>O1CCCC1.O>[F:31][CH:2]([F:1])[C:3]1[CH:7]=[C:6]([CH:8]([F:9])[F:10])[N:5]([CH2:11][C:12]([N:14]2[CH2:15][CH2:16][N:17]([C:20]3[N:25]=[C:24]([C:26]([OH:28])=[O:27])[CH:23]=[CH:22][CH:21]=3)[CH2:18][CH2:19]2)=[O:13])[N:4]=1

참가 물질

5

반응물 2

HCID 168937Lithium hydroxide, monohydrateHCID 66687274ethyl 6-(4-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperazin-1-yl)pyridine-2-carboxylate

생성물 1

HCID 666867066-(4-{[3,5-Bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperazin-1-yl)pyridine-2-carboxylic acid

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of ethyl 6-(4-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperazin-1-yl)pyridine-2-carboxylate (1.3 g) in tetrahydrofuran (20 ml) and water (5 ml) is added, at room temperature, lithium hydroxide monohydrate (185 mg). The mixture is stirred at room temperature for 5 hours, and then ice-cold 1N HCl solution is added. The aqueous phase is extracted with ethyl acetate and then the combined organic phases are dried over sodium sulphate. The solids are filtered off and the solvent is distilled off. This gives 6-(4-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-1-yl)pyridine-2-carboxylic acid (700 mg).

후처리

  1. extractionThe aqueous phase is extracted with ethyl acetate
  2. dry with materialthe combined organic phases are dried over sodium sulphate
  3. filtrationThe solids are filtered off
  4. distillationthe solvent is distilled off

출처 및 근거

ORD 기록
ord-4c1d4711d0bf47858f2866d64c062f3e
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08748420B2

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