Abstract: Embodiments of the present invention are directed generally to methods for producing high purity exo-alkenylnorbornenes from a mixture of conformational isomers thereof.

Abstract: A method for synthesizing exo-tetrahydrodicyclopentadiene (exo-THDCPD) and adamantane is provided, including isomerization of an endo-tetrahydrodicyclopentadiene (endo-THDCPD) as a reaction feed with an acidic ionic liquid of aluminum trichloride in a pseudo-fixed bed ionic liquid reactor. Reactants float as a droplet from bottom to top of the pseudo-fixed bed reactor, and finally are discharged from a side tube. A mole fraction of aluminum trichloride in the acidic ionic liquid of aluminum trichloride is from 0.5 to 0.9, a feeding rate of the reaction feed is 0.1-10 g/min, and a temperature for the isomerization is between 25-120° C.

Abstract: A process for isomerization of tetrahydrodicyclopentadiene using a supported acidic ionic liquid as catalyst is provided. In the presence of the supported acidic ionic liquid, endo-tetrahydrodicyclopentadiene is isomerized to exo-tetrahydrodicyclo-pentadiene, wherein the supported acidic ionic liquid includes a porous support and an acidic ionic liquid, and the acidic ionic liquid includes an aluminum halide, and a quaternary ammonium halide or a quaternary phosphonium halide. The porous support is impregnated with the acidic ionic liquid. Furthermore, under different reaction conditions, the exo-tetrahydrodicyclopentadiene product can be isomerized to adamantane in the presence of such a supported acidic ionic liquid.

Abstract: Embodiments of the present invention are directed generally to methods for producing high purity exo-alkenylnorbornenes from a mixture of conformational isomers thereof.

Abstract: An exo-tetrahydrodicyclopentadiene is produced from endo-tetrahydrodicyclopentadiene through isomerization reaction. An acidic ionic liquid is used in the isomerization. The isomerization of endo-tetrahydrodicyclopentadiene gives a reaction conversion and a selectivity both higher than 99%. Besides, the ionic liquid used is environmental-friendly and recyclable.

Abstract: The present invention is directed to a continuous process for producing a desired hydrocarbon product using a heterogeneous slurry catalyst, to the product of said process, and to the reactor utilized in such process.

Abstract: A supported Lewis acid catalyst system effective for hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions and comprising at least one Lewis acid immobilized on an anhydrous dihalide of Cd, Fe, Co, Ni, Mn or Mg is disclosed.

Abstract: The present invention is directed to a continuous process for producing a desired hydrocarbon product using a heterogeneous slurry catalyst, to the product of said process, and to the reactor utilized in such process.

Abstract: A process and catalyst for isomerizing olefins are disclosed. The process and catalyst are particularly useful for isomerizing alkenyl bridged ring compounds to the corresponding alkyladiene bridged ring compounds. In one embodiment, the isomerization catalyst comprises an oxygen treated mixture of an alkali metal on a dried support having a surface area of 125 to 195 m.sup.2 /g when the support consists essentially of alumina wherein the alumina precursor is a large crystallite pseudoboehmite. The catalyst is particularly useful for isomerizing 5-vinyl-2-norbornene to 5-ethylidiene-2-norbornene. The catalyst is very active and highly selective and resistant to catalyst poisons. The process contacts the catalyst with an alkenyl bridged ring compound and yields the corresponding alkyladiene bridged ring compound.

Abstract: The present invention provides a process for producing alkylidenenorbornenes by reacting C.sub.4 -C.sub.6 acyclic conjugated dienes with cyclopentadiene, dicyclopentadiene, or a methyl- or dimethyl-substituted derivative thereof in the presence of a catalyst derivative composed of:(A) a titanium-containing compound, and(B) at least one metallic reducing agent containing the group IA, IIA or IIIA metals in the periodic table.

Abstract: A process for producing a 5-alkylidenenorbornene, which comprises contacting a 5-alkenylnorbornene with an organolithium compound and at least one compound selected from the group consisting of ammonia, a hydrazine compound and an aliphatic amine compound wherein at least one nitrogen atom in the molecule bonds to at least one hydrogen atom to isomerize the 5-alkenylnorbornene. This process enables the easy and efficient production of a 5-alkylidenenorbornene from an easily available raw material.

Abstract: 5-Ethylidene-2-norbornene with high quality is effectively prepared by isomerization 5-vinyl-2-norbornene containing 1 ppm to 0.5% by weight of 4-vinylcyclohexene in the presence of at least one catalyst selected from the group consisting of a solid base catalyst which is prepared by reacting alumina, an alkali metal hydroxide and an alkali metal in a temperature range of 200.degree. to 500.degree. C. and a solid base catalyst which is prepared by reacting water-containing alumina and an alkali metal in such an amount that exceeds a molar equivalent of water contained in alumina at a temperature in a range between a melting point of the alkali metal and 500.degree. C. in an inert gas atmosphere.

Abstract: 5-Ethylidene-2-norbornene is effectively prepared by isomerization 5-vinyl-2-norbornene in the presence of at least one catalyst selected from a group consisting of a solid base catalyst which is prepared by reacting alumina and an alkali metal hydroxide at a temperature of 200.degree. to 500.degree. C. and then reacting the reaction produce with an alkali metal at a temperature of 180.degree. to 350.degree. C. and a solid base catalyst which is prepared by reacting water-containing alumina and an alkali metal in such an amount that corresponds to a molar equivalent of water contained in alumina at a temperature in a range between a melting point of the alkali metal and 500.degree. C. and then reacting the reaction product with an alkali metal at a temperature of 180.degree. to 350.degree. C.

Abstract: Alkali metal oxides of cis- and trans-2,6,6-trimethylbicyclo(3.1.1)-heptan-2-ol are surprisingly effective bases in organic reactions calling for the use of a strong base, especially those reactions wherein abstraction of a proton from attachment to a carbon atom is postulated to occur in the mechanism.

Abstract: A process for producing a 5-alkylidenenorbornene, which comprises subjecting a 5-alkenylnorbornene to catalytic reaction in the presence of ammonia and at least one alkali metal hydride selected from the group consisting of lithium, sodium and potassium hydrides. By using said alkali metal hydride supported on a carrier, the above-noted isomerization can be efficiently carried out with a relatively small amount of the catalyst.