A method of preparing catalyst particles (the “preparation method”) is disclosed. The preparation method comprises combining a Ru(0) complex and a carrier fluid to form a mixture and heating the mixture at an elevated temperature to nucleate the Ru(0) complex and give the catalyst particles in the carrier fluid. The preparation method optionally comprises isolating the catalyst particles from the carrier fluid. A method of preparing an organosilicon compound via dehydrogenative silylation with the catalyst particles (the “synthesis method”) is also disclosed. The synthesis method comprises reacting (A) an organohydridochlorosilane compound and (B) an alkene compound in the presence of (C) a catalyst, thereby preparing the organosilicon compound. The catalyst (C) of the synthesis method comprises the catalyst particles prepared by the preparation method.

Embodiments in accordance with the present invention encompass an organoruthenium compound of the formula (I) or formula (II): ##STR00001##
Wherein X, L, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Ar.sub.1 and Ar.sub.2 are as defined herein. Also disclosed herein are the use of organoruthenium compound of formula (I) or formula (II) as (pre)catalysts for the olefin metathesis reactions, as well as to the process for carrying out the olefin metathesis reaction.

A process for producing isomerized olefins, branched aldehydes and branched alcohols through isomerization, hydroformylation and hydrogenation.

Embodiments of the present invention are directed to processes to improve rhodium accountability in continuous liquid recycle hydroformylation processes. In some embodiments, a process comprises contacting in a reaction zone reactants comprising mixed C8 olefins or mixed C9 olefins, hydrogen, and carbon monoxide in the presence of a catalyst comprising rhodium and an organomonophosphite ligand to form a reaction fluid, wherein the reaction fluid is introduced to a strip gas vaporizer to produce a product stream and a vaporizer tails stream, and wherein the vaporizer tails stream comprises at least 1.2 percent by weight C8 internal olefins or at least 1.3 percent by weight C9 internal olefins.

A synthesis method and a synthesis device of cyclododecene according to the present invention have a high conversion rate of cyclododecatriene which is a reactant and a high selectivity of cyclododecene which is a required product, and even so, have an effect of significantly decreasing a reaction time. In addition, the method and the device have an excellent conversion rate of cyclododecatriene and an excellent selectivity of cyclododecene, while maintaining excellent reactivity without an organic solvent such as ethanol. Therefore, a volume of the reactor relative to an output of cyclododecene may be further decreased. Moreover, the method and the device may minimize costs for facilities and process, are practical, decrease a process time, and are industrially advantageous for mass production as compared with the conventional art.

Ethylene oligomerization catalysts include a solid support having surface hydroxyl groups on a surface of the solid support. Functional groups attached to the solid support through at least one covalent bond and coordinated with at least one catalytically active transition metal. Individual functional groups are attached to the solid support as products of condensation reactions of at least one hydrolysable group of precursor ligands with a corresponding surface group of the solid support. The precursor ligands have a general formula (Ph.sub.2P).sub.2N—R.sup.1-A, where R.sup.1 is C.sub.1-C.sub.40 hydrocarbylene or C.sub.1-C.sub.40 heterohydrocarbylene; and A is a hydrolysable group selected from trialkoxysilyl, halosilyl, carboxylates, esters, phosphonates, amines, imines, thiols, thiocarboxylates, or halides.

The present invention relates to a process for treating an effluent obtained from an oligomerization step in a vaporization step. In particular, the oligomerization step is a step for dimerization of ethylene to 1-butene with a nickel-based catalytic system.

A method for preparing an aldehyde including forming a reaction product including an aldehyde by reacting an olefin-based compound with a synthetic gas in a hydroformylation reactor in the presence of a hydroformylation catalyst; introducing the reaction product including the aldehyde to a vaporizer; separating low-boiling point components of the reaction product from an upper part of a vaporizer catch pot included in the vaporizer; separating high-boiling point components of the reaction product from a lower part of the vaporizer catch pot; and recirculating at least a portion of the low-boiling point components separated from an upper part of the vaporizer catch pot back to the vaporizer.

This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.

The invention relates to a method for the preparation of 2-aminobiphenyls, key intermediates in the preparation of compounds of interest in the agrochemical industry. The process comprises reacting an ortho-substituted aniline and a phenylboro derivative in the presence of a base and a palladium catalyst, said palladium catalyst comprising a palladium source and a biphenyl phosphine ligand of formula (III) or a salt thereof.

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