Carbamic acid, ethyl ester → Diethyl toluene-2,4-dicarbamate

HRID 2166657

Reaktionsgleichung

Reaktionsgleichung von HRID 2166657
[NH2:1][C:2]1[CH:7]=[C:6]([NH2:8])[CH:5]=[CH:4][C:3]=1[CH3:9].[C:10](=[O:15])([O:12][CH2:13][CH3:14])N>CCCCCCCC([O-])=O.CCCCCCCC([O-])=O.[Zn+2].C(O)C>[CH2:13]([O:12][C:10]([NH:1][C:2]1[CH:7]=[C:6]([NH:8][C:10]([O:12][CH2:13][CH3:14])=[O:15])[CH:5]=[CH:4][C:3]=1[CH3:9])=[O:15])[CH3:14]

Komponenten

5

Edukt 2

HCID 5641Carbamic acid, ethyl esterHCID 72612,4-Diaminotoluene

Produkt 1

HCID 343975Diethyl toluene-2,4-dicarbamate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 11180Zinc CaprylateKatalysatorHCID 702EthanolLösungsmittel

Versuchsvorschrift

733 g of 2,4-diamino-toluene, 1069 g ethyl carbamate, 1160 g ethanol (approximately 96%) and 5.5 g zinc octoate were reacted in the apparatus described in Example 1 for 6.1 hours at 200° C. After the apparatus had cooled and the pressure had been reduced, the reaction mixture was removed, filtered and analyzed by high pressure liquid chromatography (HPLC). A yield of 1220 g (76% of the theoretical yield) of 2,4-bis-(ethoxy carbonylamino)-toluene was obtained.

Aufarbeitung

  1. temperatureAfter the apparatus had cooled
  2. customthe reaction mixture was removed
  3. filtrationfiltered

Quellen und Nachweise

ORD-Eintrag
ord-27f34006e1de4d4e9fbbe866ca7e0c50
Quelldatensatz
uspto-grants-1983_06
Patentnummer
US04388238

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