Citric Acid → Methyl 2-{[(3-{[2-(trimethylsilyl)ethoxy]carbonyl}phenyl)sulfonyl]amino}benzoate

HRID 1025434

Reaktionsgleichung

Reaktionsgleichung von HRID 1025434
Cl[S:2]([C:5]1[CH:6]=[C:7]([CH:17]=[CH:18][CH:19]=1)[C:8]([O:10][CH2:11][CH2:12][Si:13]([CH3:16])([CH3:15])[CH3:14])=[O:9])(=[O:4])=[O:3].C(Cl)Cl.[NH2:23][C:24]1[CH:33]=[CH:32][CH:31]=[CH:30][C:25]=1[C:26]([O:28][CH3:29])=[O:27].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>N1C=CC=CC=1>[CH3:14][Si:13]([CH3:16])([CH3:15])[CH2:12][CH2:11][O:10][C:8]([C:7]1[CH:6]=[C:5]([S:2]([NH:23][C:24]2[CH:33]=[CH:32][CH:31]=[CH:30][C:25]=2[C:26]([O:28][CH3:29])=[O:27])(=[O:4])=[O:3])[CH:19]=[CH:18][CH:17]=1)=[O:9]

Komponenten

6

Edukt 4

HCID 311Citric AcidHCID 6344DichloromethaneHCID 8635Methyl AnthranilateHCID 866763342-(Trimethylsilyl)ethyl 3-(chlorosulfonyl)benzoate

Produkt 1

HCID 71238679Methyl 2-{[(3-{[2-(trimethylsilyl)ethoxy]carbonyl}phenyl)sulfonyl]amino}benzoateAusbeute 92,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

To a mixture of 2.09 g of 2-(trimethylsilyl)ethyl 3-(chlorosulfonyl)benzoate and 20 mL of methylene chloride were added 982 mg of methyl 2-aminobenzoate and 2.10 mL of pyridine under ice-cooling, followed by stirring at room temperature for 15 hours. To the reaction mixture was added a 10% aqueous citric acid solution, followed by extraction with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to obtain 2.61 g of methyl 2-{[(3-{[2-(trimethylsilyl)ethoxy]carbonyl}phenyl)sulfonyl]amino}benzoate as a colorless oily substance.

Aufarbeitung

  1. temperaturecooling
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe organic layer was washed with saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-938a5f9b02ab4c829e97bcb206481ec6
Quelldatensatz
uspto-grants-2014_05
Patentnummer
US08729068B2

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