ethyl N-carbonylcarbamate → ethyl N-diethoxyphosphorylcarbonylcarbamate

HRID 441900Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 441900
[CH2:1]([O:3][P:4]([O-:8])[O:5][CH2:6][CH3:7])[CH3:2].[CH2:9]([O:11][C:12]([N:14]=[C:15]=[O:16])=[O:13])[CH3:10]>C(N(CC)CC)C.C(Cl)Cl>[CH2:1]([O:3][P:4]([C:15]([NH:14][C:12](=[O:13])[O:11][CH2:9][CH3:10])=[O:16])([O:5][CH2:6][CH3:7])=[O:8])[CH3:2]

Komponenten

5

Edukt 2

HCID 300166ethyl N-carbonylcarbamateHCID 3780918Diethylphosphite

Produkt 1

HCID 21415674ethyl N-diethoxyphosphorylcarbonylcarbamate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8471TriethylamineKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 11.0 parts of diethylphosphite in 175 parts of methylene chloride and 4 drops of triethyl amine was added 10.0 parts of ethoxycarbonyl isocyanate. The solution was refluxed for 3 hours. Removing the solvent under reduced pressure left 18.5 parts of colorless oil which partially crystallized. The crystals were washed with cyclohexane to give 7.3 parts of ethyl N-(diethylphosphonocarbonyl)carbamate, m.p. 75° -64° , The proton nmr spectrum was consistent with this structure (δNH = 10.0 ppm)

Aufarbeitung

  1. temperatureThe solution was refluxed for 3 hours
  2. customRemoving the solvent under reduced pressure
  3. waitleft 18.5 parts of colorless oil which
  4. custompartially crystallized
  5. washThe crystals were washed with cyclohexane

Quellen und Nachweise

ORD-Eintrag
ord-8df23a969ce244d9ab731cbc768b4fe2
Quelldatensatz
uspto-grants-1977_08
Patentnummer
US04043793

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