Hydrochloric Acid → HCID 178501241, Verbindung

HRID 16695

Reaktionsgleichung

Reaktionsgleichung von HRID 16695
Cl.[NH2:2][C@H:3]1[CH2:8][CH2:7][C@H:6]([C:9]([O:11][CH3:12])=[O:10])[CH2:5][CH2:4]1.C(N(CC)CC)C.Cl[C:21]([O:23][CH2:24][CH2:25][Cl:26])=[O:22].Cl>C(Cl)(Cl)Cl>[Cl:26][CH2:25][CH2:24][O:23][C:21]([NH:2][C@H:3]1[CH2:4][CH2:5][C@H:6]([C:9]([O:11][CH3:12])=[O:10])[CH2:7][CH2:8]1)=[O:22]

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 123052-Chloroethyl chloroformateHCID 178501210HCID 178501210, Verbindung

Produkt 1

HCID 178501241HCID 178501241, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel2×

Versuchsvorschrift

Methyl trans-4-aminocyclohexanecarboxylate hydrochloride (5.00 g) obtained in Reference Example 2(1) is dissolved in chloroform (60 ml), and thereto is added triethylamine (11 ml) under ice-cooling, followed by dropwise addition of a solution of 2-chloroethyl chloroformate (3.3 ml) in chloroform (10 ml). After stirring at room temperature for 2.5 hours, to the reaction solution is added 5% hydrochloric acid and the mixture is extracted with chloroform. The organic layer is washed with saturated brine, dried over sodium sulfate, and then evaporated to remove the solvent under reduced pressure. The resulting residue is suspended in chloroform/diisopropyl ether. The precipitates are collected by filtration and dried to give methyl trans-4-{[(2-chloroethoxy)carbonyl]amino}cyclohexanecarboxylate (5.11 g).

Aufarbeitung

  1. temperaturecooling
  2. extractionthe mixture is extracted with chloroform
  3. washThe organic layer is washed with saturated brine
  4. dry with materialdried over sodium sulfate
  5. customevaporated
  6. customto remove the solvent under reduced pressure
  7. filtrationThe precipitates are collected by filtration
  8. customdried

Quellen und Nachweise

ORD-Eintrag
ord-89151c384c844a3bac7d79287271d536
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07737161B2

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