Dimethylamine → Bentazone dimethylammonium
Reaktionsgleichung
[CH3:1][CH:2]([N:4]1[S:14](=[O:16])(=[O:15])[NH:13][C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:5]1=[O:6])[CH3:3].[CH3:17][NH:18][CH3:19]>ClCCCl>[CH3:3][CH:2]([N:4]1[S:14](=[O:16])(=[O:15])[NH:13][C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:5]1=[O:6])[CH3:1].[CH3:17][NH2+:18][CH3:19]Komponenten
4
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 24 g of bentazone (IIa) in 216 g of 1,2-dichloroethane was treated with 22.5 g of a 20% strength aqueous solution of dimethylamine with stirring at 30°-50° C. After addition was complete, the aqueous phase was separated off at 50°-60° C. and evaporated to dryness under reduced pressure and at 50°-60° C. 28 g of bentazone-dimethylammonium (m.p. 145°-147° C.; purity >99% according to HPLC analysis for bentazone and titration for dimethylammonium) were obtained.