Lithium Hydroxide → 5-(2,2,3,3,3-Pentafluoro-propoxy)-pyridine-2-carboxylic acid
Reaktionsgleichung
C[O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([O:11][CH2:12][C:13]([F:19])([F:18])[C:14]([F:17])([F:16])[F:15])=[CH:7][N:6]=1)=[O:4].[OH-].[Li+]>>[F:19][C:13]([F:18])([C:14]([F:15])([F:16])[F:17])[CH2:12][O:11][C:8]1[CH:9]=[CH:10][C:5]([C:3]([OH:4])=[O:2])=[N:6][CH:7]=1Komponenten
3
Versuchsvorschrift
In a manner analogous to that described in example 30a), the alkylation of the 5-hydroxy-pyridine-2-carboxylic acid methyl ester with potassium carbonate and trifluoro-methanesulphonic acid 2,2,3,3,3-pentafluoropropyl ester yielded the 5-(2,2,3,3,3-pentafluoro-propoxy)-pyridine-2-carboxylic acid methyl ester as a light yellow oil. MS (ISP): m/z=285 [M]+. b) In a manner analogous to that described in example 30b), the hydrolysis of the 5-(2,2,3,3,3-pentafluoro-propoxy)-pyridine-2-carboxylic acid methyl ester with lithium hydroxide yielded the 5-(2,2,3,3,3-pentafluoro-propoxy)-pyridine-2-carboxylic acid as a white solid. MS (ISP): m/z=271 [M+H]+.