Nippon Chemical Industrial Co., Ltd.

Chiba University

Jnc Corporation

Jnc Petrochemical Corporation

Miwako Nishimura

Kazuhiro Yoshida

Tsuneo Imamoto

Aya Koide

Tetsuro Kizaki

Yoshihito Takano

Hirotsuna Yamada

Soichiro Sato

Keiichiro Kanao

A composition for a secondary battery negative electrode including a carbonaceous material (a) and a silicon oxide structure (b), wherein the silicon oxide structure (b) includes a silicon oxide framework containing Si and O in its atomic composition and silicon-based nanoparticles that are chemically bonded to the silicon oxide framework as components, wherein the silicon oxide structure (b) is contained in a proportion of 15 mass % or more with respect to a total amount of the carbonaceous material (a) and the silicon oxide structure (b), and wherein the silicon oxide structure (b) satisfies the following conditions (i) to (iii): (i) having an atomic composition represented by a general formula SiOH(0.3&#x3c;x2&#x3c;1.5, 0.01&#x3c;y2&#x3c;0.35), (ii) having Si&#x2014;H bonds, and (iii) being essentially free of carbon.

Composition for secondary battery negative electrode and negative electrode for secondary battery using the same and secondary battery

Disclosed is a process of preparing an optically active allyl compound, e.g., as represented by formula (III): comprising asymmetrically coupling an allyl compound with an organic nucleophilic compound in the presence of a catalyst. The catalyst is preferably a transition metal complex compound having a phosphine ligand. The phosphine ligand is preferably a 2,3-bis(dialkylphosphino)pyrazine derivative. The pyrazine derivative is preferably a quinoxaline derivative. The transition metal is preferably palladium.

Process of preparing optically active allyl compound

Disclosed is a process of preparing an optically active &#x3b2;-hydroxycarboxylic acid derivative comprising asymmetrically hydrogenating a &#x3b2;-keto compound in the presence of a catalyst comprising a transition metal complex compound having a 2,3-bis(dialkylphosphino)pyrazine derivative as a ligand. The pyrazine derivative is preferably a quinoxaline derivative, and the transition metal is preferably ruthenium. Preferred examples of the quinoxaline derivative are (S,S)-2,3-bis(tert-butylmethylphosphino)quinoxaline, (R,R)-bis(tert-butylmethylphosphino)quinoxaline, (S,S)-bis(tert-adamantylmethylphosphino)quinoxaline, and (R,R)-bis(adamantylmethylphosphino)quinoxaline.

Process of preparing optically active &#x3b2;-hydroxycarboxylic acid derivative

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Chiba, Japan

Miwako Nishimura