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5482682 Apparatus for direct fluorination of a hydrocarbon by molecular fluorine gas


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
73 KB
Volume
78
Category
Article
ISSN
0022-1139

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Synthesis of 4-fluoro-2, 3-dimethyl-1-ph
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## Abstract A facile procedure for preparing 4‐fluoroantipyrine is reported. Treatment of antipyrine with molecular fluorine gives 4‐fluoroantipyrine (3) and 4,4‐difluoro‐3‐hydroxy‐2,3‐dimethyl‐1‐phenylpyrazolidin‐5‐one (2). The product distribution depends on the ratio of antipyrine and molecular