Tetrahedron Letters p. 285 - 286 (1980)
Update date:2022-08-05
Topics:
Haines, Alan H.
3'4'5'6'-Tetrafluorobenzo-15-crown-5 (1) and 3',4',5',6'-tetrafluorobenzo-18-crown-6 (2) are readily prepared by reaction of hexafluorobenzene with tetra- and pentaethylene glycol, respectively, and show markedly reduced salt-extraction capability compared to hydrocarbon analogues.
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