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

HRID 128465

Reaktionsgleichung

Reaktionsgleichung von HRID 128465
[NH2:1][C:2]([O:4][CH2:5][CH3:6])=[O:3].[Mn]([O-])(=O)(=O)=O.[K+].C[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][C:19]=1[CH3:20]>>[CH2:5]([O:4][C:2]([NH:1][C:18]1[CH:17]=[C:16]([NH:1][C:2]([O:4][CH2:5][CH3:6])=[O:3])[CH:15]=[CH:14][C:19]=1[CH3:20])=[O:3])[CH3:6]

Komponenten

4

Edukt 3

HCID 5641Carbamic acid, ethyl esterHCID 7237O-XyleneHCID 516875Potassium Permanganate

Produkt 1

HCID 343975Diethyl toluene-2,4-dicarbamate

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

10 g of the urethane which had previously been treated in this way were dissolved in 60 g o-xylene. The solution is heated to 80° C. and mixed with 2 g of a 2%, by weight, aqueous potassium permanganate solution. The mixture was stirred intensely for 30 minutes at 80° C. The hot organic phase was then separated from the solid and aqueous constituents. The organic phase was concentrated by distilling off a proportion of the xylene to half of its original volume, and the purified 2,4-bis-(ethoxycarbonylamino)-toluene was obtained in a virtually quantitative yield from the concentrated solution by crystallization.

Aufarbeitung

  1. customThe hot organic phase was then separated from the solid and aqueous constituents
  2. concentrationThe organic phase was concentrated
  3. distillationby distilling off a proportion of the xylene to half of its original volume

Quellen und Nachweise

ORD-Eintrag
ord-2434c732e1b74e2095af672870efccea
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04259511

Verknüpfte Notizen

Wird geladen…