Diethyl Ether → HCID 68508768, Verbindung
Reaktionsgleichung
C([O:5][C:6]([N:8]1[C:12]([CH3:13])=[C:11]([Cl:14])[C:10]([C:15]([F:18])([F:17])[F:16])=[N:9]1)=[O:7])(C)(C)C.Cl.O1CCOCC1.CCOCC>ClCCl>[Cl:14][C:11]1[C:10]([C:15]([F:17])([F:16])[F:18])=[N:9][N:8]([C:6]([OH:7])=[O:5])[C:12]=1[CH3:13]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a stirred solution of 43.62 mmol of 4-chloro-5-methyl-3-trifluoromethylpyrazole-1-carboxylic acid tertbutyl ester in 20 mL of dichloromethane, carefully add 40 mL of 4M HCl/dioxane. The reaction mixture was allowed to stir for 2 hours. Add fresh ether and filter the white solid obtained. Vaccum dry to give the title compound 4-chloro-5-methyl-3-trifluoromethylpyrazole-1-carboxylic acid in 96% yield. LC-MS m/z=242 (M+).