Methylurea → 1-Methylimidazolidine-2,4,5-trione

HRID 1507053

Reaktionsgleichung

Reaktionsgleichung von HRID 1507053
[CH3:1][NH:2][C:3]([NH2:5])=[O:4].[C:6](Cl)(=[O:10])[C:7](Cl)=[O:8]>O1CCCC1.O>[CH3:1][N:2]1[C:7](=[O:8])[C:6](=[O:10])[NH:5][C:3]1=[O:4]

Komponenten

5

Edukt 2

HCID 11719MethylureaHCID 65578Oxalyl chloride

Produkt 1

HCID 1231961-Methylimidazolidine-2,4,5-trioneAusbeute 94,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To an ice-cold solution of 1-methylurea (200 mg, 2.70 mmol) in dry tetrahydrofuran (6 mL) was added oxalyl chloride (0.26 mL, 2.97 mmol) dropwise, under a nitrogen atmosphere. The reaction mixture was stirred at 0-5° for 2 h and then allowed to warm to room temperature for 1 h before being diluted with water. The product was extracted with ethyl acetate, and the extracts were washed with water, dried and evaporated to give the product as an off-white solid (326 mg, 94%), mp 146-149° C. (lit. 145-148° C.).

Aufarbeitung

  1. extractionThe product was extracted with ethyl acetate
  2. washthe extracts were washed with water
  3. customdried
  4. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-42307fbe258e4fb79331d1fb428ef5ab
Quelldatensatz
uspto-grants-2015_12
Patentnummer
US09221799B2

Verknüpfte Notizen

Wird geladen…