Citric Acid → HCID 68962162, Verbindung

HRID 2191819Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2191819
[NH2:1][C:2]1[CH:14]=[C:13]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([O:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH:16]=2)[CH:12]=[CH:11][C:3]=1[C:4]([O:6][C:7]([CH3:10])([CH3:9])[CH3:8])=[O:5].C(=O)([O-])[O-].[Cs+].[Cs+].I[C:36]1[CH:41]=[CH:40][C:39]2[O:42][CH2:43][O:44][C:38]=2[CH:37]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(C(C)C)=CC(C(C)C)=CC=2C(C)C)CCCCC1.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(OCC)(=O)C.C1(C)C=CC=CC=1>[O:42]1[C:39]2[CH:40]=[CH:41][C:36]([NH:1][C:2]3[CH:14]=[C:13]([C:15]4[CH:20]=[CH:19][CH:18]=[C:17]([O:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH:16]=4)[CH:12]=[CH:11][C:3]=3[C:4]([O:6][C:7]([CH3:10])([CH3:9])[CH3:8])=[O:5])=[CH:37][C:38]=2[O:44][CH2:43]1

Komponenten

10

Edukt 5

HCID 311Citric AcidHCID 10796Cesium carbonateHCID 1386201-Iodo-3,4-methylenedioxybenzeneHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenyl2×HCID 68958545HCID 68958545, Verbindung

Produkt 1

HCID 68962162HCID 68962162, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 167845palladium(II) acetateKatalysator2×HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysator2×HCID 1140TolueneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

To toluene 3.0 mL suspension of tert-butyl 2-amino-4-(3-(tert-butoxycarbonyloxy)phenyl)benzoate 0.12 g and cesium carbonate 0.25 g were added 1-iodo-3,4-methylenedioxybenzene 0.15 g, 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl 7.4 mg, tris(dibenzylideneacetone)dipalladium(0) 2.9 mg and palladium acetate 1.4 mg at room temperature, and it was stirred at 110° C. for 24 hours. 2-Dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl 7.4 mg, tris(dibenzylideneacetone)dipalladium(0) 2.9 mg and palladium acetate 1.4 mg were added to it, and it was stirred at 110° C. for 21 hours. After the reaction mixture was cooled to room temperature, ethyl acetate and 10% citric acid aqueous solution were added to it, and insoluble matter was filtrated. The organic layer was separated and collected,dried over anhydrous magnesium sulfate after washing with saturated sodium chloride aqueous solution, and the solvent was removed under reduced pressure. The obtained residue was refined by silica gel column chromatography [Trikonex company, Flash Tube 2008, eluent; hexane:ethyl acetate=10:1] to give tert-butyl 2-((benzo-1,3-dioxol-5-yl)amino)-4-(3-(tert-butoxycarbonyloxy)phenyl)benzoate.

Aufarbeitung

  1. stirringwas stirred at 110° C. for 21 hours
  2. temperatureAfter the reaction mixture was cooled to room temperature
  3. filtrationwas filtrated
  4. customThe organic layer was separated
  5. washafter washing with saturated sodium chloride aqueous solution
  6. customthe solvent was removed under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-8c57e69891dd4dd29c2b173d7b6ea364
Quelldatensatz
uspto-grants-2012_12
Patentnummer
US08327467B2

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