Process for the alkoxycarbonylation of trivinylcyclohexane.

Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.

Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.

Disclosed herein is a process for chemically synthesizing of hydroquinone derivatives, especially for hydroquinone derivatives with heptadecatrienyl side chain, which is synthesized via a Wittig reaction of 2-(10-oxononyl)-1,4-diacetoxyl benzene and (3E, 5Z)-3,5-heptadien-1-triphenylphosphonium iodide and then deacetylation. In addition, the product is solid powder.

Disclosed herein is a process for chemically synthesizing of hydroquinone derivatives, especially for hydroquinone derivatives with heptadecatrienyl side chain, which is synthesized via a Wittig reaction of 2-(10-oxononyl)-1,4-diacetoxyl benzene and (3E, 5Z)-3,5-heptadien-1-triphenylphosphonium iodide and then deacetylation. In addition, the product is solid powder.

The present invention relates to 2,3,7-Trimethyloct-6-enyl acetate and 3,7-dimethyl-2-methylene-oct-6-enyl acetate and derivatives thereof and their use as aroma chemicals.

The present invention relates to 2,3,7-Trimethyloct-6-enyl acetate and 3,7-dimethyl-2-methylene-oct-6-enyl acetate and derivatives thereof and their use as aroma chemicals.

The present invention provides a process for preparing a diester compound of the following general formula (1), having a dimethylcyclobutane ring, wherein R.sup.1 and R.sup.2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, the process comprising reacting a dimethylcyclobutanone compound of the following general formula (2), wherein R.sup.1 is as defined above, with a phosphonic ester compound of the following general formula (3), wherein R.sup.2 and R.sup.3 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, to produce the diester compound (1), having a dimethylcyclobutane ring.

##STR00001##

The present invention provides a process for preparing a diester compound of the following general formula (1), having a dimethylcyclobutane ring, wherein R.sup.1 and R.sup.2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, the process comprising reacting a dimethylcyclobutanone compound of the following general formula (2), wherein R.sup.1 is as defined above, with a phosphonic ester compound of the following general formula (3), wherein R.sup.2 and R.sup.3 represent, independently of each other, a monovalent hydrocarbon group having 1 to 10 carbon atoms, to produce the diester compound (1), having a dimethylcyclobutane ring.

##STR00001##

The present invention relates to a catalyst system for preparing a carbonate derivative, comprising selenium (Se) and a pyridine amine compound represented by structural formula 1. The catalyst system for preparing a carbonate derivative, and a method for preparing a carbonate derivative by using same, of the present invention, allow an alcohol to undergo oxidative carbonylation by using a selenium-based catalyst system, and thus are more economical than a conventional carbonylation process and can obtain a dialkyl carbonate in feasible yields.