Acetic Anhydride → HCID 54366097, Verbindung
Reaktionsgleichung
[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]([C:14]([OH:16])=[O:15])[C:9]([C:11](O)=[O:12])=[CH:10][C:5]=2[N:4]=[C:3]1[CH3:17].C(OC(=O)C)(=O)C>>[CH3:1][N:2]1[C:6]2[CH:7]=[C:8]3[C:14](=[O:16])[O:15][C:11](=[O:12])[C:9]3=[CH:10][C:5]=2[N:4]=[C:3]1[CH3:17]Komponenten
3
Versuchsvorschrift
A mixture of the 1,2-dimethyl-5,6-benzimidazoledicarboxylic acid (1.25 g, 5.34 mmol) and acetic anhydride is stirred for 2 hours at reflux temperature, cooled to 5° and filtered. The filter cake is dried to give the title product as brown needles (1.04 g, 90.1%), mp 310°-315° C.
Aufarbeitung
- temperatureat reflux temperature
- temperaturecooled to 5°
- filtrationfiltered
- customThe filter cake is dried
Quellen und Nachweise
- ORD-Eintrag
- ord-9e131466c0da4915bd289cc36f32d808
- Quelldatensatz
- uspto-grants-1996_06
- Patentnummer
- US05523279
Notizen zur Reaktion
Wird geladen…