Cesium carbonate → HCID 67182479, 화합물

HRID 2225142노트

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HRID 2225142 반응식
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH2:32][CH2:33]SC)[C:13]([NH:15][C@H:16]1[CH2:22][CH2:21][C@@H:20]2[CH2:23][C@H:17]1[C:18](=[O:31])[N:19]2[C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([O-])([O-])=O.[Cs+].[Cs+]>IC.CN(C=O)C>[CH2:1]([O:8][C:9]([NH:11][C@H:12]1[CH2:32][CH2:33][N:15]([C@H:16]2[CH2:22][CH2:21][C@@H:20]3[CH2:23][C@H:17]2[C:18](=[O:31])[N:19]3[C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C:13]1=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

5

반응물 2

HCID 10796Cesium carbonateHCID 21074905(1R,2S,5R)-tert-butyl 2-((S)-2-(benzyloxycarbonylamino)-4-(methylthio)butanamido)-7-oxo-6-aza-bicyclo[3.2.1]octane-6-carboxylate

생성물 1

HCID 67182479HCID 67182479, 화합물수율 43.3%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 6328Methyl iodide용매

실험 절차

Preparation A3, Step 3: (1R,2S,5R)-Tert-butyl 2-((S)-2-(benzyloxycarbonylamino)-4-(methylthio)butanamido)-7-oxo-6-aza-bicyclo[3.2.1]octane-6-carboxylate (5.1 g) was dissolved in iodomethane (40 mL). The resulting solution was stirred at rt for 12 h before being concentrated in vacuo. The residue was dissolved in methylene chloride, and the resulting solution was concentrated; this was repeated to afford the salt. This material was dissolved in DMF (30 mL) and the solution was charged with Cs2CO3 (6.6 g). After 12 h, the reaction was partitioned between EtOAc and brine. The organic phase was dried (MgSO4), filtered, and concentrated. The resulting residue was purified by flash chromatography to afford (1R,2S,5R)-tert-butyl 2-((S)-3-(benzyloxycarbonylamino)-2-oxopyrrolidin-1-yl)-7-oxo-6-aza-bicyclo[3.2.1]octane-6-carboxylate (2.0 g). MS found: (M+H)+=458.6.

후처리

  1. concentrationbefore being concentrated in vacuo
  2. dissolutionThe residue was dissolved in methylene chloride
  3. concentrationthe resulting solution was concentrated
  4. customto afford the salt
  5. waitAfter 12 h
  6. customthe reaction was partitioned between EtOAc and brine
  7. dry with materialThe organic phase was dried (MgSO4)
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe resulting residue was purified by flash chromatography

출처 및 근거

ORD 기록
ord-dfcac45b910646378cdd3b6812bc29b8
출처 데이터셋
uspto-grants-2008_05
특허 번호
US07378409B2

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