Urea → 5-Chloro-1,3-dihydro-6-nitro-2H-benzimidazol-2-one

HRID 36867Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 36867
[Cl:1][C:2]1[CH:3]=[C:4]([NH2:12])[C:5]([NH2:11])=[CH:6][C:7]=1[N+:8]([O-:10])=[O:9].N[C:14](N)=[O:15]>>[Cl:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][C:5]2[NH:11][C:14](=[O:15])[NH:12][C:4]=2[CH:3]=1

Komponenten

3

Edukt 2

HCID 1176UreaHCID 57026184-Chloro-5-nitro-o-phenylenediamine

Produkt 1

HCID 145662265-Chloro-1,3-dihydro-6-nitro-2H-benzimidazol-2-one

Versuchsvorschrift

A mixture of 14 g (0.074 mol) of 4-chloro-5-nitro-1,2-benzenediamine and of 13.44 g (0.226 mol) of urea is heated at 180° C. for 4 hours. The reaction mixture is cooled and evaporated to dryness. The residue is taken up in methanol and evaporated again. The residue is triturated in ether and a solid is obtained which is filtered. The product is used as is in the subsequent stages.

Aufarbeitung

  1. temperatureThe reaction mixture is cooled
  2. customevaporated to dryness
  3. customevaporated again
  4. customThe residue is triturated in ether
  5. customa solid is obtained which
  6. filtrationis filtered

Quellen und Nachweise

ORD-Eintrag
ord-48938a94b76547d78882f6917891a754
Quelldatensatz
uspto-grants-1995_05
Patentnummer
US05418241

Notizen zur Reaktion

Wird geladen…