Ethanol → Diethyl toluene-2,4-dicarbamate

HRID 1388221

Reaktionsgleichung

Reaktionsgleichung von HRID 1388221
[NH2:1][C:2]1[CH:7]=[C:6]([NH2:8])[CH:5]=[CH:4][C:3]=1[CH3:9].N[C:11](N)=[O:12].[C:14](=[O:19])([O:16][CH2:17][CH3:18])N.[CH2:20]([OH:22])[CH3:21]>CCCCCCCC([O-])=O.CCCCCCCC([O-])=O.[Zn+2]>[CH2:17]([O:16][C:14]([NH:1][C:2]1[CH:7]=[C:6]([NH:8][C:11]([O:22][CH2:20][CH3:21])=[O:12])[CH:5]=[CH:4][C:3]=1[CH3:9])=[O:19])[CH3:18]

Komponenten

6

Edukt 4

HCID 702EthanolHCID 1176UreaHCID 5641Carbamic acid, ethyl esterHCID 72612,4-Diaminotoluene

Produkt 1

HCID 343975Diethyl toluene-2,4-dicarbamate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 11180Zinc CaprylateKatalysator

Versuchsvorschrift

169 g of a polyurea mixture based on 2,4-diaminotoluene containing terminal aminotolyl groups (average molecular weight, 1500) were introduced into the apparatus described in Example 1. 428 g of 2,4-diaminotoluene, 384 g of urea, 168 g of ethyl carbamate, 1700 g of ethanol (approximately 96%) and 5.2 g of zinc octoate were then added. The mixture was reacted for 6.0 hours at 200° C. in the same way as in Example 1. After cooling and venting of the apparatus, the reaction mixture was removed, filtered and analyzed by high pressure liquid chromatography. A yield of 937 g (75% of the theoretical yield) of 2,4-bis-(ethoxy carbonyl amino)-toluene was determined.

Aufarbeitung

  1. additionwere introduced into the apparatus
  2. customThe mixture was reacted for 6.0 hours at 200° C. in the same way as in Example 1
  3. temperatureAfter cooling
  4. customthe reaction mixture was removed
  5. filtrationfiltered

Quellen und Nachweise

ORD-Eintrag
ord-3ee3243f4e4343a1b3920bf6589b5d95
Quelldatensatz
uspto-grants-1984_02
Patentnummer
US04430505

Verknüpfte Notizen

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