Preparation of fluoroorganic compounds with calcium fluoride

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260 96HA, 260586R, 260590R, 260591, 260592, 260593H, 260598, 260599, 260601H, 260646, 260648F, 260649F, 260650F, 2606538, 260694, 568655, 568656, 568669, 568683, 568684, C07C 1710, C07C 1712, C07C 1714, C07C 5158

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041743490

ABSTRACT:
Fluoroorganic compounds are prepared by reacting a haloorganic starting material in which at least one halo atom is replaceable with a fluorine atom by metathetical exchange, with calcium fluoride in the presence of a crown ether and an anhydrous, polar, basic organic solvent which complexes with the calcium ion and contains no --OH groups, at a temperature and for a period of time adequate to effect fluorination.

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patent: 2859245 (1958-11-01), Smith
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patent: 3696150 (1972-10-01), Lidstein et al.
patent: 3991108 (1976-11-01), Jordan
Simons et al., "JACS" vol. 65, 2064-2065 (1943).
Stephens et al., "Quart. Rev", vol. 162, pp. 44-51 (1962).
Sheppard, "J. Org. Chem.," vol. 29, No. 1, pp. 1-11 (1964).
Weygand, "Prep. Org. Chem.", pp. 204-209 (1972), John Wiley & Sons.

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