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Polymer-supported aminopyridinium salts as versatile catalysts for the synthesis of aryl fluorides

✍ Scribed by Yasuo Yoshida; Yoshikazu Kimura; Masao Tomoi

Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
230 KB
Volume
30
Category
Article
ISSN
0040-4039

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✦ Synopsis

Immobilized N-alkylaminopyridinium salts on divinylbenzene crosslinked polystyrene gel was reusable at least 8 times on the reaction of 4chloronitrobenzene with anhydrous potassium fluoride in tetrahydrothiophene I,1 -dioxide to give 4-fluoronitrobenzene in high yield. The immobilized

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## Abstract **Two birds with one auric stone**: The title system acts as a highly efficient heterogeneous catalyst for the one‐pot tandem synthesis of imines or oximes from alcohols and the corresponding amines under mild conditions (see scheme; HAP= hydroxyapatite).magnified image