Agency of Industrial Science and Technology

National Institute of Advanced Industrial Science and Technology

Director-general of Agency of Industrial Science and Technology

Wako Pure Chemical Industries, Inc.

Maruzen Petrochemical Company, Limited

N.e. Chemcat Corporation

Director-general of Agency of Industrial Science

Toshiyasu Sakakura

Masato Tanaka

Hiroyuki Yasuda

Shun-ya Onozawa

Toshiaki Kobayashi

Nami Choi

Yukio Takagi

Norihisa Fukaya

Toshikazu Takahashi

Takashi Naniki

Takahiro Kiyosu

Shouji Yamamoto

Jun-chul Choi

Fujio Abe

Takuro Furukawa

Kaori Saitou

Massato Tanaka

Yasumasa Takenaka

Masae Ueda

Shun-Ya Onozawa

A method for producing a heterogeneous catalyst for use of synthesizing cyclic carbonates by reacting an epoxide and carbon dioxide in the presence of the catalyst. A method for making a catalyst that includes forming a catalyst precursor then reacting the catalyst precursor with a tertiary phosphine.

Method for producing catalyst for cyclic carbonate synthesis

The invention has an object to obtain an organic inorganic composite material having high activity and high selectivity, and suitable as a catalyst material having small elution of an active metal from a carrier, and further to obtain an organosilicon compound suitable for the preparation of the composite material. The composite material is an organic inorganic composite material comprising an organosilicon compound having at least two groups containing reactive silicon at a molecular end, bonded to one silicon atom constituting the organosilicon compound, and an inorganic oxide material, the organosilicon compound and the inorganic oxide material being bonded to each other through a plurality of groups containing reactive silicon of the organosilicon compound. The organosilicon compound is represented by the following general formula (1) or (2).

Organic inorganic composite material and utilization thereof

The invention provides a method for producing an arylhydroxylamine compound efficiently and safely under mild conditions. The method involves contacting a nitroaryl compound with a hydrogen source in the presence of a platinum catalyst supported on amino group-coordinated silica and a poisoning agent.

Method for producing arylhydroxylamine

The present invention provides an alkylene-carbonate synthesis catalyst comprising a compound insoluble to one phase containing alkylene carbonate produced when the alkylene oxide and carbon dioxide are reacted with the catalyst and soluble to the other phase substantially free of alkylene carbonate. The catalyst allows alkylene carbonate to be produced with high yield and selectivity and be readily collected. The catalyst also facilitates repeated or continuous reaction process in a cost-effective manner. The present invention also provides an apparatus for producing alkylene carbonate using the catalyst.

Catalyst for synthesizing alkylene carbonate

A polysilane is produced by subjecting a trihydrosilane to hydrogenative condensation in the presence of a titanium or zirconim complex catalyst having a first group selected from a dialkylaminoalkylcyclopentadienyl group, an &agr;-&lsqb;(dialkylamino)alkyl&rsqb;indenyl group and a &bgr;-&lsqb;(dialkylamino)alkyl&rsqb;indenyl group and a second group selected from a cyclopentadienyl group and a pentamethylcyclopentadienyl group. The above dialkylaminoalkyl group may be replaced by a branched alkyl group. The zirconium complexes are novel compounds.

Process for preparing polysilane by catalytic dehydrogenative condensation of organosilane and metal complex catalyst therefor

A polysilane is produced by subjecting a trihydrosilane to hydrogenative condensation in the presence of a titanium or zirconim complex catalyst having a first group selected from a dialkylaminoalkylcyclopentadienyl group, an .alpha.-[(dialkylamino)alkyl]indenyl group and a .beta.-[(dialkylamino)alkyl]indenyl group and a second group selected from a cyclopentadienyl group and a pentamethylcyclopentadienyl group. The above dialkylaminoalkyl group may be replaced by a branched alkyl group. The zirconium complexes are novel compounds.

Process for preparing polysilane by catalytic dehydrogenative

A highly heat-resistant crosslinked polymer is prepared by subjecting an organic-inorganic hybrid polymer consisting of the repeating monomeric units of the formula ##STR1## in which A is a divalent hydrocarbon group such as phenylene group, to an oxidative crosslinking reaction by heating in air at 50.degree. to 400.degree. C.

Method for the preparation of a heat-resistant silicon-containing polymer

There is disclosed a method for producing a polysilane which comprises reacting a hydrosilane compound in the presence of an organolanthanoid complex.

Method for producing polysilanes

A efficient photochemical method for the preparation of an alcohol compound, e.g., benzyl alcohol, from a non-olefin hydrocarbon compound, e.g., benzene, was proposed in which a mixture of the non-olefin hydrocarbon compound as the starting material and a hydrogen donor compound, which is a cycloalkane of 5 to 16 carbon atoms in a molecule, e.g., cyclooctane, or an aliphatic alcohol of up to 10 carbon atoms in a molecule, e.g., isopropyl alcohol, is irradiated with light under an atmosphere of carbon monoxide in the presence of a complex compound of rhodium or iridium, of which at least one of the ligands is preferably a monophosphine or bisphosphine compound. The method is advantageous in that the reaction can proceed under mild reaction conditions and that the amount of the aldehyde compound formed in the reaction mixture as a by-product is very small as compared with conventional methods so as to greatly facilitate isolation of the desired alcohol product from the reaction mixture.

Method for the preparation of an alcohol from hydrocarbon

A process is disclosed for the preparation of .alpha.-substituted carbonyl compounds, wherein .alpha.-substituted ketone is prepared by the following reaction: ##STR1## .alpha.-azo ester is prepared by the following reaction: ##STR2## and .alpha.-hydrozono ester is prepared by the following reaction: ##STR3## wherein the .alpha.-azo ester and .alpha.-hydrazono ester obtained by the above reactions include novel compounds, which are also disclosed.

Process for preparing .alpha.-substituted carbonyl compound

A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.

Process for direct carbonylation of hydrocarbons

Process for the preparation or .alpha.-azo esters

In accordance with a process of the present invention, .alpha.-keto acids of the general formula RCOCOOH wherein R is aryl, alkenyl or heterocyclic group, can be obtained through one-step carbonylation reaction of an organic halogenide of the general formula RX wherein R is the same as above and X is a halogen atom, with carbon monoxide and water in the presence of a basic compound and a palladium containing catalyst.

Process of producing .alpha.-keto acids

Disclosed is a process for the preparation of alpha-aryl and alpha-heteroaryl ketones useful as intermediates in the synthesis of various pharmaceutical and agricultural chemicals, which process operates according to the following reaction scheme: ##STR1##

Growing community of inventors

Tsukuba, Japan

Toshiyasu Sakakura