摘要:
Aliphatic, cycloaliphatic, aromatic or araliphatic halogen compounds are reductively dehalogenated by reaction with hydrocarbons in the presence of carbon in the liquid phase at from 100.degree. to 450.degree. C. with formation of hydrogen halides.
摘要:
A catalyst for the hydrogenation of a diolefin, having palladium or a compound thereof and at least one co-catalyst component selected from the group consisting of ruthenium, rhodium, cobalt, and rhenium supported each in the form of an elemental metal or a metal compound on a support, its method of preparation and its use for said hydrogenation, particularly for the hydrogenation of cyclopentadiene to cyclopentene is described herein.
摘要:
Benzene, or an alkylbenzene, is hydrogenated by reaction with hydrogen in the presence of a Group IVa (titanium family) or Va metal hydride catalyst. The catalyst may be a simple hydride such as ZrH.sub.2 or a hydride of an alloy such as Cu.sub.3 Zr or may be a complex material. One complex material is the reaction product of a Group IVa or Va metal halide, such as ZrCl.sub.4 with an alkyllithium or aryllithium, such as n-butyllithium, in a hydrocarbon solvent.
摘要:
Symmetrical carotenoids are prepared from the half-molecules by dimerizing the phosphonium salts of the half-molecules with peroxides, peroxo compounds or peroxy compounds in an alkaline medium.
摘要:
A series of mono, bi and tricarbocyclic compounds, most of which have olefinic unsaturation in the ring, which may or may not have substituents thereon. While the bi and tricyclic rings may be unsubstituted, these compounds which have olefinic unsaturation, particularly multiple olefinic unsaturation, are polymerizable and copolymerizable in known polymerization systems. They are particularly good crosslinking agents. These compounds are further useful in the sense that they can be cleaved oxidatively, to corresponding carboxylic acids, aldehydes and/or alcohols which have known utility in the plasticizer and detergent arts. The compounds which do not have olefinic unsaturation can also be oxidatively cleaved to produce oxygenated, e.g., acid, alcohol or aldehyde, compounds having known utility.
摘要:
A process for the dimerization or codimerization of diolefins in the liquid phase in an inert solvent solution using a catalyst comprising a complex obtained by reacting the alkali metal or alkaline earth metal salt of tricarbonyl nitrosyl ferrate anion with a metallic halogen or pseudohalogen or complex thereof is disclosed.