Tetrakis phosphonium fluoride

An industrially important application of the lipophilic tetrakis(dimethylamino) phosphonium fluoride is as a phase-transfer catalyst in the Halex process for technical synthesis of fluoroarenes. [Pg.35]

In the presence of heavy metal salts, such as HgCl2, AgNOs or PtCl4, the reaction between phosphine and formaldehyde is also catalysed by acids weaker than hydrochloric acid. Thus, in this way, phosphonium acetate, oxalate, lactate or fluoride can be obtained directly. According to studies by Raver 178,179) phosphine reacts with formaldehyde even in the absence of acids when metal salts such as HgCl2, NiClj, Crj(S04)3, PtCl4 or finely divided metals are present in catalytic amounts Tetrakis (hydroxymethyl)phospho-... [Pg.40]

When activated by anionic catalysts [potassium fluoride, cesium fluoride, tctraalkylammonium fluorides, tris(dimethylamino)sulfonium difluorotrimethylsilicate, phosphazenium, hexa-methylpiperidinium and cobaltoccnium fluorides, tetrabuiylammonium difluoro(triphenyl-silyl)silicatc. the complex tetrakis(dimethylamino)ethene/pcrfluoropropene, ammonium (and phosphonium) periluorocyclobuianc ylides], trimethyl(perfluoroalkyl)silanes will generate C-Rp bonds from carbon-halogen bonds. [Pg.406]

A very effective means of increasing the nucleophilicity of naked fluorides is efficient charge distribution over a large organic cation, for example tetrakis(dialky-lamino)phosphonium or phosphazenium ions (Scheme 2.12). [Pg.35]

Alkyl dimethyl ethylbenzyl ammonium chloride Myristalkonium chloride biocide, sec. oil field recovery Tetrakis (hydroxymethyl) phosphonium sulfate biocide, ship bottom paints Triphenyltin fluoride biocide, slurries 7-Ethyl bicyclooxazolidine biocide, soaps 3,4,4 -Trichlorocarbanilide biocide, specialties... [Pg.4908]

Benzyl trimethyl ammonium hydroxide Cetrimonium bromide Dimethyl diallyl ammonium chloride Laurtrimonium bromide Laurtrimonium chloride Methyl tributyl ammonium chloride Tetrabutyl ammonium bromide Tetrabutyl ammonium chloride Tetrabutyl ammonium fluoride Tetra-n-butyl ammonium hydrogen sulfate Tetra-n-butyl ammonium hydroxide Tetrabutyl ammonium iodide Tetrabutylphosphonium acetate, monoacetic acid Tetrabutylphosphonium bromide Tetrabutylphosphonium chloride Tetraethylammonium bromide Tetraethylammonium hydroxide Tetrakis (hydroxymethyl) phosphonium chloride Tetramethylammonium bromide Tetramethylammonium chloride Tetramethylammonium hydroxide Tetramethyl ammonium iodide Tetraphenyl phosphonium bromide Tetrapropyl ammonium bromide Tetrapropyl ammonium iodide Tributylamine Tributyl phosphine Tributyl (tetradecyl) phosphonium chloride Trioctyl (octadecyl) phosphonium iodide catalyst, phase-transfer Tetraethylammonium chloride Tetraoctylphosphonium bromide Tri-n-butyl methyl ammonium chloride Tri methyl phenyl ammonium hydroxide catalyst, phenolics Triethylamine... [Pg.4943]