Bromopinacolone → (S)-2-{[5-(3,3-Dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester 1-methyl ester

HRID 1908626노트

반응식

HRID 1908626 반응식
[CH3:1][O:2][C:3](=[O:29])[C@@H:4]([NH:14][C:15]([C:17]1[CH:21]=[C:20]([OH:22])[N:19]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:18]=1)=[O:16])[CH2:5][CH2:6][C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8].[H-].[Na+].Br[CH2:33][C:34](=[O:39])[C:35]([CH3:38])([CH3:37])[CH3:36]>CN(C=O)C.[Cl-].[Na+].O>[CH3:1][O:2][C:3](=[O:29])[C@@H:4]([NH:14][C:15]([C:17]1[CH:21]=[C:20]([O:22][CH2:33][C:34](=[O:39])[C:35]([CH3:38])([CH3:37])[CH3:36])[N:19]([C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=2)[N:18]=1)=[O:16])[CH2:5][CH2:6][C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8]

참가 물질

6

반응물 3

HCID 21642BromopinacoloneHCID 24758Sodium hydrideHCID 178501468HCID 178501468, 화합물

생성물 1

HCID 66920060(S)-2-{[5-(3,3-Dimethyl-2-oxo-butoxy)-1-phenyl-1H-pyrazole-3-carbonyl]-amino}-pentanedioic acid 5-tert-butyl ester 1-methyl ester

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 57417360Sodium chloride; water용매

실험 절차

A solution of 6.5 g of (S)-2-[(5-Hydroxy-1-phenyl-1H-pyrazole-3-carbonyl)-amino]-pentanedioic acid 5-tert-butyl ester 1-methyl ester in 175 ml of DMF was cooled to 0° C. Then, 644 mg of sodium hydride (60% in mineral oil) was added portionwise over 20 min. Further 20 min after completion of the addition 2.9 g of 1-Bromo-3,3-dimethyl-butan-2-one was added and the reaction mixture was allowed to warm to RT. After striring for 16 h the reaction mixture was diluted with brine and extracted with DCM. The organic phase was dried over MgSO4 and the solvents were removed under reduced pressure. The crude product was purified by chromatography on silica gel eluting with a gradient of n-heptane/ethyl acetate. The fractions containing the product were combined and the solvent evaporated under reduced pressure. Yield: 3.3 g.

후처리

  1. additionwas added
  2. extractionextracted with DCM
  3. dry with materialThe organic phase was dried over MgSO4
  4. customthe solvents were removed under reduced pressure
  5. customThe crude product was purified by chromatography on silica gel eluting with a gradient of n-heptane/ethyl acetate
  6. additionThe fractions containing the product
  7. customthe solvent evaporated under reduced pressure

출처 및 근거

ORD 기록
ord-2b6f2a15ef2642cf8114976875df67f5
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08598179B2

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