Reaktionsgleichung
Cl.[F:2][C:3]([F:12])([F:11])[C:4]1[CH:10]=[CH:9][C:7](N)=[CH:6][CH:5]=1.N([O-])=O.[Na+].[C:17]1(=[O:23])[NH:21][C:20](=[O:22])[CH:19]=[CH:18]1.C([O-])(=O)C.[Na+]>O.CC(C)=O.[Cu](Cl)Cl>[F:2][C:3]([F:12])([F:11])[C:4]1[CH:10]=[CH:9][C:7]([C:19]2[C:20](=[O:22])[NH:21][C:17](=[O:23])[CH:18]=2)=[CH:6][CH:5]=1Komponenten
Edukt 5
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 3
Versuchsvorschrift
A mixture of hydrochloric acid (37% in water, 285 mL) and water (190 mL) was added to 4-(trifluoromethyl)aniline (150 g, 116 mL) at room temperature with vigorous stirring and the formed precipitate was allowed to stir for further 30 minutes. Temperature was reduced to 0° C. and sodium nitrite (70.6 g) in 180 mL of water was added dropwise to the stirred suspension. At the end of diazotisation, a clear yellow solution was obtained. Maleimide (180 g) in acetone (1.1 L) was added dropwise at 0° C. and then the pH of the solution was adjusted to 3-3.5 by adding sodium acetate. Copper (II) chloride (18.8 g) was added to the vigorously stirred mixture. After a few minutes a gas started to develop (conspicuous foaming). The reaction mixture was allowed to stir at 0° C. for 1 h and overnight at room temperature. Acetone was removed in vacuo, the residue was filtered and dried overnight in vacuo to give the title compound (155 g) as a light brown solid.
Aufarbeitung
- stirringto stir for further 30 minutes
- customwas reduced to 0° C.
- customAt the end of diazotisation, a clear yellow solution was obtained
- waitAfter a few minutes a gas started
- stirringto stir at 0° C. for 1 h and overnight at room temperature
- customAcetone was removed in vacuo
- filtrationthe residue was filtered
- customdried overnight in vacuo
Quellen und Nachweise
- ORD-Eintrag
- ord-ef3281565b4e4622afcb19c9b901291b
- Quelldatensatz
- uspto-grants-2010_06
- Patentnummer
- US07727988B2
Verknüpfte Notizen
Wird geladen…