Lithium Hydroxide → 5-(2,2,3,3,3-Pentafluoro-propoxy)-pyridine-2-carboxylic acid

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Reaction Steps

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]+.

Provenance & Evidence