Showa Denko K.k.

Sds Biotech K.k.

Showa Denko Kabushiki Kaisha

Haruaki Ito

Hiromoto Ohno

Toshio Ohi

Fanil Makhmutov

Masaaki Shimizu

Hiroshi Yasuda

Makoto Saito

Hiroshi Kubo

Hiroshi Kobayashi

Hideo Miyata

Nobuo Ishikawa

Kohei Morikawa

Kuniomi Marumo

Katsutoshi Morinaka

Sumio Soya

Hiroyuki Monzen

Tsutomu Nozawa

Teruhiko Ishii

Toshiaki Shimizu

Kimitaka Ohshiro

Takashi Tani

Masatoshi Motoyoshi

Takashi Bando

Utaro Matsushita

Kazuhiro Kojima

Toshiro Yasue

Matsutaro Yamaguchi

Nobuko Saito

Yutaka Wakatsuki

The present invention relates to a method for producing monosilane and tetraalkoxysilane comprising subjecting alkoxysilane represented by formula (1)HSi(OR)&#x2003;&#x2003;(1)wherein R represents alkyl group having 1 to 6 carbon atoms and n represents an integer of from 1 to 3, to disproportionation reaction in a gaseous phase in the presence of an inorganic phosphate or a catalyst having a specific chemical structure based on a heteropolyacid salt structure. In the production method of the present invention, separation from the solvent can be carried out easily, the reaction proceeds quickly and the conversion rate of the starting materials is high.

Method for producing monosilane and tetraalkoxysilane

The present invention relates to method for producing monosilane and tetraalkoxysilane comprising subjecting alkoxysilane represented by formula (1)HSi(OR)&#x2003;&#x2003;(1)wherein R represents alkyl group having 1 to 6 carbon atoms and n represents an integer of from 1 to 3, to dismutation reaction in a gaseous phase in the presence of a catalyst containing an alkali metal fluoride and a catalyst activator. The method can solve problems in a method for producing monosilane and tetraalkoxysilane by dismutation reaction of alkoxysilane in a liquid phase: i.e. problems such that separation from the solvent is difficult and that the reaction is too slow and not suitable for industrial production.

A process for producing a cyanobenzoic acid compound, a cyanobenzamide compound, an alkyl cyanobenzoate compound, and a cyanobenzoyl chloride compound, which are useful intermediates for a variety of chemicals such as pharmaceuticals, agrochemicals, liquid crystals, and monomers for functional polymers. One nitrile group of an easily available phthalonitrile compound is selectively hydrolyzed to thereby produce a cyanobenzamide compound with high selectivity and yield. The cyanobenzamide compound thus-produced is transformed under acidic conditions into a cyanobenzoic acid compound and a cyanobenzoate ester compound without the cyano group of the benzene ring being damaged.

Process for producing cyanobenzoic acid derivatives

Process for production of benzonitrile and benzyl alcohol

A process for production of a 3,5-difluoroaniline compound with ease is disclosed, which comprise reacting an aminating agent with a 1,3,5-trifluorobenzene compound.

Process for producing 3,5-difluoroaniline and derivative thereof

A process for producing tetrafluorophthalic acid is disclosed, which comprises the steps of:

Process for producing tetrafluorophthalic acid

A propionate derivative having the general formula (I): ##STR1## wherein R.sup.1 is phenyl which may be substituted with one or more of the same as different substituents selected from the group consisting of halogen, methyl, methoxy, and nitro, R.sup.2 is alkyl, cycloalkyl, or alkenyl, R.sup.3 is alkylthio, cycloalkylthio, alkenylthio, phenylthio, or benzylthio which may be substituted with halogen or methyl and R.sup.4 is imidazol-1-yl or 1,2,4-triazol-1-yl, or the acid addition salt thereof or the metal complex thereof. This novel propionate derivative is suitable for use as an agricultural fungicide.

Imidazolyl or triazolyl substituted propionate derivative and nonmedical

A 2,3-dichloro-N-difluoromethoxyphenylmaleimide of the formula (I): ##STR1## is useful as an agricultural and horticultural fungicide, particularly for fruit trees.

N-(Difluoromethoxy substituted phenyl)-dichloromaleimides used in

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Tokyo, Japan

Haruaki Ito