Abstract: The oligomerization of ethylene using a chromium catalyst having a heteroatomic ligand may be used to provide oligomerization products that are selective towards hexene and/or octene. However, such processes also typically produce some polymer as an undesirable by product. The present invention is directed towards improvements in the selective oligomerization of ethylene.

Abstract: A method for manufacturing dialkylzinc and dialkylaluminum monohalide that makes it possible to efficiently manufacture both dialkylzinc and dialkylaluminum monohalide of high purity and at a high yield on an industrial scale with a single reaction from zinc halide and trialkylaluminum as raw materials, while suppressing the production of precipitants in the reaction process and suppressing the adhesion of precipitates to the equipment and the admixture thereof into the product. The method for manufacturing dialkylzinc and dialkylaluminum monohalide by reacting zinc halide with trialkylaluminum, includes using trialkylaluminum with a hydride concentration of 0.01% by mass to 0.10% by mass, and separating dialkylzinc essentially not containing aluminum from reactants and then separating dialkylaluminum monohalide essentially not containing zinc.

Abstract: Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms. Processes for producing haloaluminoxane compositions are also provided.

Abstract: Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms.

Abstract: The present inventions relate to novel ionic liquids comprising a Lewis acid anion such as AlyR3y+1 wherein y is greater than 0 and R is independently selected from the group consisting of an alkyl group and halogen group. The cation of the ionic liquids can be selected from ammonium, sulfonium, and phosphonium cations wherein said cation generally has less than 14 total carbon atoms. The anion may contain an organic bridge to bond neighboring aluminum atoms that would otherwise be susceptible to leaching aluminum trichloride. The ionic liquids are useful in many applications and particularly as catalysts.

Abstract: The present invention provides a compound of formula I which is useful as antiviral agents, in particular, as agents against viruses of the herpes family.

Abstract: A catalytically active aluminoxane can be synthesized from a precursor formed by the combination of at least one trialkylaluminum compound and at least one organoaluminum compound containing a carbon-oxygen bond therein, such as an alkoxy group-containing organoaluminum compound of the formula (CH.sub.3).sub.2 Al--O--R, where R is alkyl.

Abstract: The reaction between an alkylaluminum compound such as trimethylaluminum and carbon dioxide or an organic carbonyl reagent such as benzoic acid or benzophenone is facilitated and accelerated by contacting these reactants in the presence of an inert organic solvent/diluent and a catalytic quantity of water. The process is preferably conducted using continuous feeds of the components to the reaction zone. The proportions of (I) and (ii) fed to the reactor are maintained such that there are about 1.4 to about 2.2 moles of alkylaluminum per mole of oxygen atoms as CO.sub.2 or the organic carbonyl reagent, and the weight ratio of aluminum alkyl to the solvent/diluent is preferably in the range ca. 20:80 to ca. 60:40. Polyalkylaluminoxanes formed in the process can have better solubility in paraffinic or cycloparaffinic hydrocarbons, and also greater storage stability.

Abstract: A hydrocarbon-soluble alkylaluminoxane composition, such as, methylaluminoxane or even a modified methylaluminoxane, can be prepared by preparing an alkylaluminoxane precursor via non-hydrolytic means, such as, by treating at least one trialkylaluminum compound with a compound containing an oxygen-carbon bond, adding to that precursor an effective amount of an organoaluminum compound which prevents formation of insoluble species, such as, a trialkylaluminum compound where each alkyl group contains two or more carbon atoms, and converting that modified precursor to an alkylaluminoxane, such as, by thermolysis. In a distinct embodiment of the invention, if an insoluble methylaluminoxane product is formed using the non-hydrolytic technique, it can be solubilized by treatment with a solubilizing amount of an alkylaluminoxane, prepared by either hydrolytic or non-hydrolytic means, wherein the alkyl moieties contain two or more carbon atoms.

Abstract: The present invention relates to a process for forming a composition comprising oligomeric alkylaluminoxane, e.g., preferably methylaluminoxane, and moieties having the structure--OC(R).sub.3, where R is, for example, methyl, which comprises initially treating a composition comprising trialkylaluminum with a reagent containing a carbon-oxygen double bond, such as, carbon dioxide, followed by hydrolysis of the resulting composition with water.Another embodiment of the invention a composition comprising oligomeric methylaluminoxane and greater than 10 mole % of moieties of the structure --OC(R).sub.3, where R is methyl, which, when such composition is hydrolyzed, there is an evolution of hydrolysis products of methane and at least one C.sub.2 or higher alkane, such as t-butane.

Abstract: A process for the synthesis of bis(dichloroalumino)methane, with a lessened danger of runaway reaction, entails the gradual addition of methylene bromide to a heated mixture of aluminum and methylene chloride. An aluminum alkyl activator is also advantageously present as a scavenger for moisture and oxygen to prevent undesired oligomer formation.

Abstract: Disclosed herein are organometallic ternary charge transfer complexes of the formula (I)a(RX).multidot.MX.multidot.b(Ar) (I)whereinRX is an inorganic chloride or fluoride which contains at least one oxygen and/or sulfur atom and is capable of forming a complex salt a(R).multidot.MX.sub.(a+m) with the Lewis acid MX.sub.m, such as NOCl or NOF,MX.sub.m is a Lewis acid metal chloride or fluoride, such as BCl.sub.3, BF.sub.3, AlCl.sub.3, GaCl.sub.3, TlCl.sub.3, AsCl.sub.3, AsF.sub.5, SbCl.sub.5, FeCl.sub.3, SnCl.sub.4, TiCl.sub.4, ZrCl.sub.4, NbCl.sub.5, TaCl.sub.5, MoCl.sub.5 and WCl.sub.6,Ar is an aromatic compound, such as napthalene, anthracene, thiophene, furan and benzene which is unsubstituted or substituted with lower alkyl, halogen, diloweralkylamino, oxo or lower alkoxy,m is an integer representing the valency of the metal M,a is an integer selected such that the sum of a and m does not exceed the coordination number of the metal M of the given valency,b is 0.