Journal of fluorine chemistry

Selective fluorination of ethyl 1-methylpyrazole-4-carboxylates with poly (hydrogen fluoride)-amine complex under electrolytic anodic oxidation

K Makino, H Yoshioka

Index: Makino, Kenzi; Yoshioka, Hirosuke Heterocycles, 1987 , vol. 26, # 5 p. 1215 - 1220

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Citation Number: 50

Abstract

Abstract Fluorination of ethyl 1-methylpyrazole-4-carboxylate (1a) and its 3-chloro analogue (1b) with poly (hydrogen fluoride)-pyridine-triethylamine complex under electrolytic anodic oxidation yielded new ethyl 1-methyl-5-fluoropyrazole-4-carboxylate (2a), ethyl 1-