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Water → (3R,4S)-1-(tert-butoxycarbonyl)-4-{4-[2-(2,6-dichloro-4-methylphenoxy)ethoxy]phenyl}piperidine-3-carboxylic acid

HRID 658235
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HRID 658235 반응식
C[O:2][C:3]([C@@H:5]1[C@@H:10]([C:11]2[CH:16]=[CH:15][C:14]([O:17][CH2:18][CH2:19][O:20][C:21]3[C:26]([Cl:27])=[CH:25][C:24]([CH3:28])=[CH:23][C:22]=3[Cl:29])=[CH:13][CH:12]=2)[CH2:9][CH2:8][N:7]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:6]1)=[O:4].[OH-].[Na+].O>CO>[C:33]([O:32][C:30]([N:7]1[CH2:8][CH2:9][C@H:10]([C:11]2[CH:16]=[CH:15][C:14]([O:17][CH2:18][CH2:19][O:20][C:21]3[C:26]([Cl:27])=[CH:25][C:24]([CH3:28])=[CH:23][C:22]=3[Cl:29])=[CH:13][CH:12]=2)[C@@H:5]([C:3]([OH:4])=[O:2])[CH2:6]1)=[O:31])([CH3:36])([CH3:34])[CH3:35]
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HCID 962WaterHCID 14798Sodium HydroxideHCID 67148356(3R,4S)-4-{4-[2-(2,6-Dichloro-4-methyl-phenoxy)-ethoxy]-phenyl}-piperidine-1,3-dicarboxylic Acid 1-tert-butyl Ester 3-methyl Ester

생성물 1

HCID 59234216(3R,4S)-1-(tert-butoxycarbonyl)-4-{4-[2-(2,6-dichloro-4-methylphenoxy)ethoxy]phenyl}piperidine-3-carboxylic acid수율 65.7%

시약·촉매·용매 1

HCID 887
Methanol
용매

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온도
70 °C

실험 절차

To a sol. of compound (rac.)-(3R*,4S*)-4-{4-[2-(2,6-Dichloro-4-methylphenoxy)ethoxy]phenyl}-piperidine-1,3-dicarboxylic acid 1-tert-butyl ester 3-methyl ester (0.15 g, 0.27 mmol) in MeOH (1 mL) was added aq. 1M NaOH (1 mL). The mixture was stirred at 70° C. for 2 h. Water was added, and the mixture was extracted with EtOAc. The org. phase was washed with brine, dried over MgSO4, filtered, and the solvents were removed under reduced pressure. The crude residue was purified on a pad of silica gel to yield the title compound (93 mg, 65%). LC-MS: tR=1.12 min, ES+=524.24.

후처리

  1. extractionthe mixture was extracted with EtOAc
  2. washphase was washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. customthe solvents were removed under reduced pressure
  6. customThe crude residue was purified on a pad of silica gel

출처 및 근거

ORD 기록
ord-df4a4e1d4b474cfc818b9a86b3dbab42
출처 데이터셋
uspto-grants-2011_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08076359B2

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