Dimethyl Sulfate → HCID 12922361, Verbindung
Reaktionsgleichung
[C:1]1([C:7]2[C:11]([O:12][CH2:13][CH2:14][CH3:15])=[C:10]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[N:9]([CH3:22])[N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[S:23]([O:28]C)([O:26][CH3:27])(=[O:25])=[O:24]>C1(C)C=CC=CC=1>[CH3:27][O:26][S:23]([O-:28])(=[O:25])=[O:24].[CH3:22][N+:9]1[N:8]([CH3:27])[C:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[C:11]([O:12][CH2:13][CH2:14][CH3:15])[C:10]=1[C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
3,5-Diphenyl-1-methyl-4-n-propoxypyrazole (2.77 g, 0.0095 mole) in molecular sieve dried toluene (80 ml) is heated to 50°C and dimethyl sulfate (2.5 g, 0.02 mole) is added. The mixture is stirred and heated under reflux for 6 hours, cooled and set aside overnight. The reaction mixture is then extracted with water, the water layer evaporated to dryness under vacuum to afford the title compound as a hygroscopic solid in 96% yield.