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 1908646노트

반응식

HRID 1908646 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].CC(C)([O-])C.[K+].Br[CH2:37][C:38](=[O:43])[C:39]([CH3:42])([CH3:41])[CH3:40]>CN(C=O)C>[CH3:1][O:2][C:3](=[O:29])[C@@H:4]([NH:14][C:15]([C:17]1[CH:21]=[C:20]([O:22][CH2:37][C:38](=[O:43])[C:39]([CH3:42])([CH3:41])[CH3:40])[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

5

반응물 3

HCID 21642BromopinacoloneHCID 23665647Potassium tert-butoxideHCID 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 1

HCID 6228Dimethylformamide용매

실험 절차

Crude (S)-2-[(5-Hydroxy-1-phenyl-1H-pyrazole-3-carbonyl)-amino]-pentanedioic acid 5-tert-butyl ester 1-methyl ester (44 g) was dissolved in DMF and treated with 12.2 g potassium tert-butoxide and 14.7 ml 1-bromopinacolone. After 2 h the solvent was removed in vacuo, the residue taken up in DCM and extracted with water. The crude product obtained after evaporation of the solvent was purified by flash column chromatography on silica eluting with heptane/ethyl acetate giving the title compound as colorless oil (45 g).

후처리

  1. customAfter 2 h the solvent was removed in vacuo
  2. extractionextracted with water

출처 및 근거

ORD 기록
ord-a13c9b70cec04809a99fb89fc9ce525c
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08598179B2

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