Rubidium fluoride catalyst

In the vapor phase, perfluoro-2-azopropene has been oxidized at high temperatures with oxygen using rubidium fluoride as a catalyst to produce IV-nitrosobis(trifluromethyl)amine, b.p. -3°C to -4°C [34] (Eq. 5). [Pg.224]

The addition of chlorine monofluoridc across the C = 0 bonds in difluorophosgene, per-fluoroacyl fluorides, and perfluoroketones with the formation of hypochlorites occurs only in the presence of the catalysts potassium fluoride, rubidium fluoride, cesium fluoride80,81 or the strong Lewis acids hydrogen fluoride, boron trifluoride, or arsenic(V) fluoride.82 The cesium fluoride catalyzed reactions are carried out in an autoclave for 2-3 hours at — 20"C or left overnight.80... [Pg.249]

A study of the Knoevenagel condensation of cyclohexanone and benzaldehyde with three active-methylene components showed that rubidium fluoride and cesium fluoride are more effective catalysts than potassium fluoride and that lithium fluoride... [Pg.794]

Condensation catalyst. Papers by both Rand - and LeGolP cite prior Japanese work on the ability of RF to catalyze the Knoevenagel condensation. Rand et al. treated equimolecular amounts of a ketone and an active-methylene compound with 0.5 mole of a metal fluoride in ethanol or DMF and concluded that cesium and rubidium fluoride are somewhat superior to KF, whereas sodium and lithium fluoride are much inferior. [Pg.1200]

Rubidium fluoride, RbF. Supplier Amer. Potash and Chem. Corp. Catalyst for the Knoevenagel reaction, see Cesium fluoride. [Pg.1225]

Knoevenagel catalyst Ion-exchange resins. Rubidium fluoride. [Pg.1389]

A detailed study of the rearrangement of heptafluoro-2-phenylbut-1-ene (11) to but-2-ene 12 and the E,7. equilibration of 12 showed that lithium and sodium fluorides do not catalyze the rearrangement. Cesium, rubidium, and potassium fluorides are effective catalysts, in that order of decreasing reactivity.25... [Pg.172]

SULKOL (7704-34-9) Combustible solid (flash point 405°F/207°C). Finely divided dry material forms explosive mixture with air. The vapor reacts violently with lithium carbide. Reacts violently with many substances, including strong oxidizers, aluminum powders, boron, bromine pentafluoride, bromine trifluoride, calcium hypochlorite, carbides, cesium, chlorates, chlorine dioxide, chlorine trifluoride, chromic acid, chromyl chloride, dichlorine oxide, diethylzinc, fluorine, halogen compounds, hexalithium disilicide, lampblack, lead chlorite, lead dioxide, lithium, powdered nickel, nickel catalysts, red phosphorus, phosphorus trioxide, potassium, potassium chlorite, potassium iodate, potassium peroxoferrate, rubidium acetylide, ruthenium tetraoxide, sodium, sodium chlorite, sodium peroxide, tin, uranium, zinc, zinc(II) nitrate, hexahydrate. Forms heat-, friction-, impact-, and shock-sensitive explosive or pyrophoric mixtures with ammonia, ammonium nitrate, barium bromate, bromates, calcium carbide, charcoal, hydrocarbons, iodates, iodine pentafluoride, iodine pentoxide, iron, lead chromate, mercurous oxide, mercury nitrate, mercury oxide, nitryl fluoride, nitrogen dioxide, inorganic perchlorates, potassium bromate, potassium nitride, potassium perchlorate, silver nitrate, sodium hydride, sulfur dichloride. Incompatible with barium carbide. [Pg.1112]