Ube Industries, Inc.

Hiroshi Shiraishi

Takato Nakamura

Yuji Akiyoshi

Takaaki Abe

Nobuyuki Kuroda

Takashi Hayama

Ikuo Shiraishi

Katsumasa Harada

Sumio Umemura

Kikuo Ataka

Yasuo Nakamura

Takaaki Kuwata

Tokuo Matsuzaki

Mikio Kojima

Fumio Iwata

Nagaaki Takamitsu

Kaoru Yamamoto

Takumi Manabe

Takuji Enomiya

Sumio Umumura

Cyclododecanone and cyclododecanol are produced each in high yield by reacting a epoxycyclododecane compound with hydrogen in the presence of a solid catalyst containing (a) catalytic component including a platinum group metal, (b) a promoter component including a VIII group, IIb group, IIIb group, IVb group, Vb group VIb group or VIIb group element or lanthanoid element or compound of the element, and (c) a carrier supporting the components (a) and (b) thereon.

Method of producing cyclododecanone and cyclododecanol

Epoxidized C -C cyclohydrocarbon compounds, for example, epoxidized C -C cycloalkanes, cycloalkenes and/or cycloalkadienes are converted to cycloalkanols, cycloalkanones and cycloalkanes by hydrogenating the epoxidized C -C cyclohydrocarbon compounds with hydrogen under a pressure of 0.1 to 5.4 MPa at a temperature of 100 to 280&deg; C. in the presence of a catalyst containing at least one platinum group metal, for example, Pd or Ru.

Method of hydrogenating epoxidized C6&mdash;C12 cyclohydrocarbon compounds

Disclosed are a 3-alkoxy-N-cyclolalkylsulfonylalkanoic amide compound represented by the formula (I): ##STR1## wherein R represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; X represents an oxygen atom or a sulfur atom; Z represents a --CH.dbd. group or a nitrogen atom; and n represents an integer of 2 to 9, a process for preparing the same and a herbicide containing the same as an active ingredient(s).

3-alkoxy-N-cycloalkylsulfonyalkanoic amide derivative and herbicide

Disclosed are a sulfonamide compound represented by the following formula (I): ##STR1## wherein Y represents a lower akyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group, a cyano-lower alkyl group or --C(CH.sub.3).sub.2 (OR.sup.1) where R.sup.1 represents a lower akyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; Q represents a substituted or unsubstituted pyridyl group or --NR.sup.2 R.sup.3 where R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group; and R.sup.3 represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a phenyl group or a benzyl group; or R.sup.2 and R.sup.3 may be combined to form a cycloamino group; X represents an oxygen atom or a sulfur atom; and Z represents a nitrogen atom or --CH.dbd. group; processes for preparing the same and a herbicide containing the same as an active ingredient(s).

Sulfonamide derivative, process for preparing the same and herbicide

Disclosed is a 3-alkoxyalkanoic acid compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a cycloalkyl group, a halo-lower alkyl group or a cyano-lower alkyl group; R.sup.2 represents hydrogen atom or a lower alkyl group; R.sup.3 represents a lower alkyl group or a cycloalkyl group; or R.sup.2 and R.sup.3 are mutually bonded to represent a cycloalkyl group; R.sup.4 represents hydrogen atom, a lower alkyl group or a lower alkynyl group; R.sup.5 represents a lower alkoxy group, a lower alkyl group, a halogen atom or a halo-lower alkyl group; R.sup.6 represents a lower alkoxy group or a lower alkyl group; and

3-alkoxyalkanoic acid derivative, process for preparing the same and

3-Alkoxy-4-hydroxyphenylacetic acid useful as intermediate for preparation of pharmaceuticals is prepared by catalytic reduction with hydrogen using a palladium catalyst of corresponding 3-alkoxy-4-hydroxymandelic acid occurring as the reaction product between 2-alkoxyphenol and glyoxylic acid at high conversion and yield.

Process for preparation of 3-alkoxy-4-hydroxyphenylacetic acid

A process for preparing protocatechualdehyde or a 3-alkoxy-4-hydroxybenzaldehyde which comprises subjecting catechol or a 2-alkoxyphenol to reaction with glyoxylic acid in a basic aqueous medium in the presence of a catalyst containing one or more compounds selected from aluminium oxide, silicon oxide and hydrated aluminium oxide in an amount of not less than 0.01 g per 1 g of the starting catechol or 2-alkoxyphenol at a temperature of 0.degree. to 50.degree. C., and then oxidizing the thus obtained reaction mixture in a basic medium.

Process for preparing protocatechualdehyde and its derivatives

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Ube, Japan

Hiroshi Shiraishi