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Lithium Hydroxide → (R)-1-(3-(1-tert-butoxycarbonyl-4-piperidyl)propionyl]-3-piperidinecarboxylic acid

HRID 843712
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HRID 843712 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][CH2:15][C:16]([N:18]2[CH2:23][CH2:22][CH2:21][C@@H:20]([C:24]([O:26]CC)=[O:25])[CH2:19]2)=[O:17])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].O1CCCC1.[OH-].[Li+].OS([O-])(=O)=O.[K+]>CO.O>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([CH2:14][CH2:15][C:16]([N:18]2[CH2:23][CH2:22][CH2:21][C@@H:20]([C:24]([OH:26])=[O:25])[CH2:19]2)=[O:17])[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
참가 물질반응 조건실험 절차후처리출처 및 근거반응 노트

참가 물질

7

반응물 4

HCID 3939Lithium HydroxideHCID 8028TetrahydrofuranHCID 516920Potassium bisulfateHCID 54527704(R)-ethyl 1-[3-(1-tert-butoxycarbonyl-4-piperidyl)propionyl]-3-piperidinecarboxylate

생성물 1

HCID 54408184(R)-1-(3-(1-tert-butoxycarbonyl-4-piperidyl)propionyl]-3-piperidinecarboxylic acid수율 90.1%

시약·촉매·용매 2

HCID 887Methanol용매
HCID 962Water용매

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온도
0 °C

실험 절차

A solution of (R)-ethyl 1-[3-(1-tert-butoxycarbonyl-4-piperidyl)propionyl]-3-piperidinecarboxylate (3.99 g) in a mixture of methanol (10 ml), tetrahydrofuran (10 ml) and water (10 ml) was added lithium hydroxide (1.27 g) under stirring at 0° C. After stirring at ambient temperature for 1 hour, the mixture was acidified with 5% KHSO4 aqueous solution and extracted with ethyl acetate. The extract was washed with water, brine and dried over MgSO4, and evaporated in vacuo to give (R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)propionyl]-3-piperidinecarboxylic acid (3.34 g).

후처리

  1. stirringAfter stirring at ambient temperature for 1 hour
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with water, brine
  4. dry with materialdried over MgSO4
  5. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-ec0e4842a51e478b9d22e8b3f827374f
출처 데이터셋
uspto-grants-2002_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06380215B1

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