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(2R,3S)-alpha-Diazo-3-[(1R)-1-hydroxyethyl]-beta,4-dioxo-2-azetidinebutanoic Acid (4-Nitrophenyl)methyl Ester → (4-Nitrophenyl)methyl (5R,6S)-6-((1R)-1-hydroxyethyl)-3,7-dioxo-1-azabicyclo(3.2.0)heptane-2-carboxylate

HRID 64811
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인쇄 미리보기

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HRID 64811 반응식
[OH:1][C@@H:2]([C@@H:4]1[C@@H:7]([CH2:8][C:9](=[O:26])[C:10]([C:13]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][C:20]([N+:23]([O-:25])=[O:24])=[CH:19][CH:18]=2)=[O:14])=[N+]=[N-])[NH:6][C:5]1=[O:27])[CH3:3]>C1C=CC=CC=1.C([O-])(=O)C.[Rh+2].C([O-])(=O)C>[OH:1][C@@H:2]([C@H:4]1[C:5](=[O:27])[N:6]2[C@@H:7]1[CH2:8][C:9](=[O:26])[CH:10]2[C:13]([O:15][CH2:16][C:17]1[CH:18]=[CH:19][C:20]([N+:23]([O-:25])=[O:24])=[CH:21][CH:22]=1)=[O:14])[CH3:3]
참가 물질반응 조건실험 절차후처리출처 및 근거반응 노트

참가 물질

4

반응물 1

HCID 56625991(2R,3S)-alpha-Diazo-3-[(1R)-1-hydroxyethyl]-beta,4-dioxo-2-azetidinebutanoic Acid (4-Nitrophenyl)methyl Ester

생성물 1

HCID 11198839(4-Nitrophenyl)methyl (5R,6S)-6-((1R)-1-hydroxyethyl)-3,7-dioxo-1-azabicyclo(3.2.0)heptane-2-carboxylate

시약·촉매·용매 2

HCID 21674Acetic acid, rhodium(2+) salt촉매HCID 241Benzene용매

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온도
78 °C

실험 절차

A suspension of (3S,4R)-3-[(R)-1-hydroxyethyl]-4-[3-(4-nitrobenzyl)oxycarbonyl-2-oxo-3-diazopropyl]azetidin-2-one (56.4 mg, 0.15 mmol) and rhodium (II) acetate (0.1 mg) in dry benzene (3 ml) is deoxygenated by bubbling through nitrogen for 10 minutes. The mixture is then heated to 78° C. for 1 hour. During heating the solid starting material gradually goes into solution. The mixture is then cooled, filtered to remove the catalyst, and the filtrate is concentrated in vacuo to yield (5R,6S) p-nitrobenzyl 6-[(R)-1-hydroxyethyl]-1-azabicyclo[3.2.0]heptan-3,7-dione-2-carboxylate, 51 mg. (98%) as a colorless oil which slowly crystallized at room temperature (22° C.).

후처리

  1. customis deoxygenated
  2. customby bubbling through nitrogen for 10 minutes
  3. temperatureDuring heating the solid
  4. temperatureThe mixture is then cooled
  5. filtrationfiltered
  6. customto remove the catalyst
  7. concentrationthe filtrate is concentrated in vacuo

출처 및 근거

ORD 기록
ord-ca3e005acf88490a8935cb5657f4148f
출처 데이터셋
uspto-grants-1986_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04610820

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