4-Methylmorpholine → trans-2-(4-Methyl-cyclohexylcarbamoyl)-cyclopropanecarboxylic acid methyl ester

HRID 501280노트

반응식

HRID 501280 반응식
[CH3:1][O:2][C:3]([C@@H:5]1[CH2:7][C@H:6]1[C:8]([OH:10])=O)=[O:4].[B-](F)(F)(F)F.CCOC(C(C#N)=NOC(N(C)C)=[N+](C)C)=O.CN1CCOCC1.[CH3:40][C@H:41]1[CH2:46][CH2:45][C@H:44]([NH2:47])[CH2:43][CH2:42]1>CN(C=O)C>[CH3:1][O:2][C:3]([C@@H:5]1[CH2:7][C@H:6]1[C:8](=[O:10])[NH:47][CH:44]1[CH2:45][CH2:46][CH:41]([CH3:40])[CH2:42][CH2:43]1)=[O:4]

참가 물질

6

반응물 4

HCID 79724-MethylmorpholineHCID 2733286O-[(Ethoxycarbonyl)cyanomethylenamino]-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 12510972rac-(1R,2R)-2-(methoxycarbonyl)cyclopropane-1-carboxylic acidHCID 178461305HCID 178461305, 화합물

생성물 1

HCID 68456814trans-2-(4-Methyl-cyclohexylcarbamoyl)-cyclopropanecarboxylic acid methyl ester수율 95.6%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

Stir a solution of trans-cyclopropane-1,2-dicarboxylic acid monomethyl ester (Example 3a) (3.0 g, 20.8 mmol) and TOTU (8.5 g, 26 mmol) in DMF (300 mL) at ambient temperature for 20 min at which time add N-methylmorpholine (2.4 mL 22.9 mmol) and trans 4-methylcyclohexylamine 3.06 g, 27.0 mmol). After 3 h, remove the solvent and dissolve the residue in H2O/EtOAc. Extract the aqueous layer 3 more times with EtOAc and combine the extracts. Wash the extract with saturated NaHCO3 solution, brine and dry over MgSO4. Concentrate the solvent to afford the crude product, and purify by column chromatography over silica gel to give 4.76 g (95%) of colorless crystals, m/z=240 (M+H)+.

후처리

  1. customremove the solvent
  2. dissolutiondissolve the residue in H2O/EtOAc
  3. extractionExtract the aqueous layer 3 more times with EtOAc
  4. washWash the
  5. extractionextract with saturated NaHCO3 solution, brine
  6. dry with materialdry over MgSO4
  7. concentrationConcentrate the solvent
  8. customto afford the crude product
  9. custompurify by column chromatography over silica gel

출처 및 근거

ORD 기록
ord-2b11d0b9d5d3465298f57f1b378e1252
출처 데이터셋
uspto-grants-2010_08
특허 번호
US07772252B2

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