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Ethyl Acetate → rac-(3R,4R)-1-[(tert-butoxy)carbonyl]-4-(ethoxycarbonyl)pyrrolidine-3-carboxylic acid

HRID 1158323
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HRID 1158323 반응식
[CH2:1]([O:3][C:4]([C@H:6]1[C@H:10]([C:11]([OH:13])=[O:12])[CH2:9][N:8](CC2C=CC=CC=2)[CH2:7]1)=[O:5])[CH3:2].C(O[C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29])(C)(C)C.CCOC(C)=O>CCO.[OH-].[OH-].[Pd+2]>[CH2:1]([O:3][C:4]([C@H:6]1[C@H:10]([C:11]([OH:13])=[O:12])[CH2:9][N:8]([C:26]([O:27][C:28]([CH3:29])([CH3:30])[CH3:31])=[O:32])[CH2:7]1)=[O:5])[CH3:2]
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참가 물질

6

반응물 3

HCID 8857Ethyl AcetateHCID 10219638Carbonic acid, bis(1,1-dimethylethyl) esterHCID 59512525(3S*,4S*)-1-Benzyl-pyrrolidine-3,4-dicarboxylic acid monoethyl ester

생성물 1

HCID 11437663rac-(3R,4R)-1-[(tert-butoxy)carbonyl]-4-(ethoxycarbonyl)pyrrolidine-3-carboxylic acid

시약·촉매·용매 2

HCID 9942167Palladium hydroxide촉매
HCID 702
Ethanol
용매

실험 절차

A mixture of (3S*,4S*)-1-benzyl-pyrrolidine-3,4-dicarboxylic acid monoethyl ester (10 g, 36.1 mmol), di-tert-butylcarbonate (7.9 g, 39.6 mmol) and Pd(OH)2/C 20% (1 g, 50% wet) in EtOH (200 mL) is stirred under hydrogen atmosphere for 5 h. The crude material is filtered over a pad of Celite and concentrated. 1H-NMR indicates that the title compound is obtained cleanly. TLC, Rf (AcOEt)=0.17. MS (LC-MS): 286.1 [M−H]−.

후처리

  1. filtrationThe crude material is filtered over a pad of Celite
  2. concentrationconcentrated
  3. customis obtained cleanly

출처 및 근거

ORD 기록
ord-1cf5fe01b4cd4f1ab5a2f5055a6e501c
출처 데이터셋
uspto-grants-2010_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07807709B2

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