Xenon difluonde fluonnation

Xenon difluonde fluonnates adeimantane m low yield [45 (equation 22) When the carbon-hydrogen bond is activated by an a-sulfur atom, fluorination occurs readily The reactions involve intermediates that contain sulfur-fluorine bonds. A -Fluoropyridinium reagents behave similarly [99, 100, 101, 102] (equations 55-57)... [Pg.163]

Diselenides can also be oxidatively fluonnated, as shown in equation 18 [118, 119], Benzene selenyl fluoride is postulated as an intermediate during the fluo-roselenation of alkenes with diphenyl diselenide and xenon difluonde [73, 120]... [Pg.47]

Xenon difluonde [ 5], xenon difluondecomplexed with dialkyl suthdes [89], and xenon difluonde intercalated with graphite [90] are all effective reagents for the fluonnation of acids, enolates, or enols (Table 2)... [Pg.161]

Carboxylic acids react with xenon difluonde to produce unstable xenon esters The esters decarboxylate to produce free radical intermediates, which undergo fluonnation or reaction with the solvent system Thus aliphatic acids decarboxylate to produce mainly fluoroalkanes or products from abstraction of hydrogen from the solvent Perfluoro acids decarboxylate in the presence of aromatic substrates to give perfluoroalkyl aromatics Aromatic and vinylic acids do not decarboxylate [91] (equation 51)... [Pg.161]

Xenon difluonde reaction with nitro enolates provides a useful entry into a wide variety of fluonnated synflietic intermediates [91 92] (equation 52)... [Pg.161]

Silyl enol ethers are fluonnated in high yields with xenon difluonde [62 93, 94 95] Applications of this reaction to the preparation of fluonnated... [Pg.161]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...