Cyclopropylamine → Ethyl 4-(cyclopropylamino)cyclohexanecarboxylate

HRID 1025415Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1025415
[CH:1]1([NH2:4])[CH2:3][CH2:2]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].O=[C:20]1[CH2:25][CH2:24][CH:23]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:22][CH2:21]1.C(=O)([O-])O.[Na+]>C(Cl)(Cl)Cl.ClCCCl.C(O)(=O)C>[CH:1]1([NH:4][CH:20]2[CH2:25][CH2:24][CH:23]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:22][CH2:21]2)[CH2:3][CH2:2]1

Komponenten

8

Edukt 4

HCID 69828CyclopropylamineHCID 317638Ethyl 4-oxocyclohexanecarboxylateHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydride

Produkt 1

HCID 67126892Ethyl 4-(cyclopropylamino)cyclohexanecarboxylateAusbeute 90,5 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 111,2-DichloroethaneLösungsmittelHCID 176Acetic AcidLösungsmittelHCID 6212ChloroformLösungsmittel

Versuchsvorschrift

To a mixture of 3.35 g of cyclopropylamine, 1.0 mL of acetic acid, 9.34 g of sodium triacetoxyborohydride, and 30 mL of 1,2-dichloroethane was added dropwise 5.00 g of ethyl 4-oxocyclohexane carboxylate at room temperature. After stirring at room temperature for 14 hours, to the reaction mixture was added a saturated aqueous sodium hydrogen carbonate solution to quench the reaction. To the reaction mixture was added chloroform, followed by extraction and then the organic layer was dried over anhydrous sodium sulfate. After filtration, the solvent was evaporated under reduced pressure and the obtained residue was purified by silica gel column chromatography (aqueous ammonia-methanol-chloroform) to obtain 5.62 g of ethyl 4-(cyclopropylamino)cyclohexane carboxylate as a colorless oily substance.

Aufarbeitung

  1. customto quench
  2. customthe reaction
  3. extractionfollowed by extraction
  4. dry with materialthe organic layer was dried over anhydrous sodium sulfate
  5. filtrationAfter filtration
  6. customthe solvent was evaporated under reduced pressure
  7. customthe obtained residue was purified by silica gel column chromatography (aqueous ammonia-methanol-chloroform)

Quellen und Nachweise

ORD-Eintrag
ord-7fd9576ce5364ebea71ef76111132f1c
Quelldatensatz
uspto-grants-2014_05
Patentnummer
US08729068B2

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