A Facile Synthesis of Calix[4]quinone Crown-4-Ethers

31 December 1999

journal article
research article
Published by Georg Thieme Verlag KG in Synthesis

Vol. 1999 (1) , 69-71
https://doi.org/10.1055/s-1999-3677

Abstract

Diamide-calix[4]crown-4-ether 3, diester-calix[4]-crown-4-ether 5 and calix[4]-crown-4-ether 7 were conveniently oxidized by sodium perborate tetrahydrate in trifluoroacetic acid to afford the diquinone 4 and 6 and monoquinone 8, respectively. The structures of the calix[4]quinones were established by IR, MS, ¹H NMR, ¹³C NMR and elemental analysis.

Keywords

CALIX[4]CROWN
OXIDATION
SODIUM PERBORATE TETRAHYDRATE
CALIX[4]QUINONE

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