Carbamic acid, ethyl ester → Ethyl N-tert-butylcarbamate

HRID 1632599Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1632599
[C:1](=[O:6])([O:3][CH2:4][CH3:5])[NH2:2].[CH2:7]=[C:8]([CH3:10])[CH3:9]>C(O)C>[C:8]([NH:2][C:1](=[O:6])[O:3][CH2:4][CH3:5])([CH3:10])([CH3:9])[CH3:7]

Komponenten

4

Edukt 2

HCID 5641Carbamic acid, ethyl esterHCID 8255Isobutylene

Produkt 1

HCID 4189386Ethyl N-tert-butylcarbamateAusbeute 93,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

A stirred mixture of 89 g of ethyl carbamate, 5 g of ethanol, 10 g of ®LEWASORB AC-10 and 70 g of isobutene was heated to 70° C. in a stirred autoclave, and stirring was continued at this temperature for 4 hours. After the reaction was complete, the catalyst was separated off and the mixture was worked up by distillation. 136 g (93% of theory) of ethyl N-tert.-butylcarbamate of boiling point 70°-71° C./20 mbar were obtained. Gas chromatography showed that the crude product contained 0.2 percent by weight of diisobutene, but not diethyl carbonate was detected.

Aufarbeitung

  1. customthe catalyst was separated off
  2. distillationthe mixture was worked up by distillation

Quellen und Nachweise

ORD-Eintrag
ord-29e69c9f6b674a1aa57aa531a5aed22a
Quelldatensatz
uspto-grants-1984_10
Patentnummer
US04476316

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