Urea → Hexyl carbamate

HRID 263313

Reaktionsgleichung

Reaktionsgleichung von HRID 263313
[CH2:1]([OH:7])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[NH2:8][C:9](N)=[O:10]>[Ni]>[C:9](=[O:10])([O:7][CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH3:6])[NH2:8]

Komponenten

4

Edukt 2

HCID 1176UreaHCID 81031-Hexanol

Produkt 1

HCID 75026Hexyl carbamateAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 935NickelKatalysator

Reaktionsbedingungen

Temperatur
130 °C

Versuchsvorschrift

A mixture of 918 parts of hexyl alcohol, 300 parts of urea and 14 parts of a cation exchanger which is commercially available under the registered name Amberlite 200 and, having been treated in accordance with Example (1 a), contains nickel, is heated to 130° C. whilst stirring. The temperature is then raised to 150° C. in the course of 6 hours and maintained thereat for a further 4 hours. After filtering off the exchanger, excess hexyl alcohol is distilled off under reduced pressure. 680 parts of hexyl carbamate (94% of theory) are obtained. Melting point= 56°-57° C.

Aufarbeitung

  1. temperatureThe temperature is then raised to 150° C. in the course of 6 hours
  2. temperaturemaintained
  3. filtrationAfter filtering off the exchanger, excess hexyl alcohol
  4. distillationis distilled off under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-cbd25491c0c14f7198570b34679ea4c9
Quelldatensatz
uspto-grants-1979_05
Patentnummer
US04156784

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