Sodium Hydroxide → (3R,5S)-5-(benzyloxycarbonylamino)-1-tert-butoxycarbonyl-piperidine-3-carboxylic acid

HRID 2168875노트

반응식

HRID 2168875 반응식
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]1[CH2:17][N:16]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:15][C@H:14]([C:25]([O:27]C)=[O:26])[CH2:13]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[Na+]>CO>[CH2:1]([O:8][C:9]([NH:11][C@@H:12]1[CH2:17][N:16]([C:18]([O:20][C:21]([CH3:23])([CH3:24])[CH3:22])=[O:19])[CH2:15][C@H:14]([C:25]([OH:27])=[O:26])[CH2:13]1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

4

반응물 2

HCID 14798Sodium HydroxideHCID 541184661-tert-butyl 3-methyl(3R,5S)-5-{[(benzyloxy)carbonyl]amino}piperidine-1,3-dicarboxylate

생성물 1

HCID 59356597(3R,5S)-5-(benzyloxycarbonylamino)-1-tert-butoxycarbonyl-piperidine-3-carboxylic acid수율 88.8%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

To a solution (700 ml) of 1-tert-butyl 3-methyl(3R,5S)-5-{[(benzyloxy)carbonyl]amino}piperidine-1,3-dicarboxylate (115 g) in methanol was added 1M aqueous sodium hydroxide solution (350 ml) under ice-cooling, and the mixture was stirred at room temperature for 12 hr. The reaction mixture was concentrated under reduced pressure to about ⅓ volume, and the residual aqueous solution was washed with ethyl acetate-hexane (1:1, 600 ml). The aqueous layer was neutralized with 1M hydrochloric acid and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give the object product (98.5 g).

후처리

  1. temperaturecooling
  2. concentrationThe reaction mixture was concentrated under reduced pressure to about ⅓ volume
  3. washthe residual aqueous solution was washed with ethyl acetate-hexane (1:1, 600 ml)
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe extract was washed with saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customThe solvent was evaporated under reduced pressure

출처 및 근거

ORD 기록
ord-9af2c20b96e74464b0c062c11840e5ca
출처 데이터셋
uspto-grants-2015_06
특허 번호
US09045436B2

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