Kuraray Co., Ltd.

Daiichi Pharmaceutical Co., Ltd.

Daiichi Sankyo Company, Limited

Tatsuhiko Hayashibara

Hideharu Iwasaki

Tomoyuki Watanabe

Manzo Shiono

Yasutaka Inubushi

Masahiro Torihara

Naoshi Nakagawa

Junko Sato

Hiroyuki Nohira

Yoshin Tamai

Katsuji Ujita

Yoshihisa Tsuji

Toshifumi Akiba

Kenichi Koyakumaru

Tatsuru Saito

Kazuhiro Kurosaki

Kojiro Hara

Mie Kodani

Toshimichi Mitani

Kensuke Nagashima

Mie Kanehara

Tadashi Hatanaka

Shingo Ueyama

Emi Yatagai

Masayoshi Yamanaka

Eriko Matsuda

Kazuya Shimizu

Provided are an acrylate derivative useful as a raw material of a polymer compound for resist compositions capable of giving resist patterns which are excellent in lithographic performance and have a good shape, an intermediate thereof (alcohol derivative) and production processes for them. To be specific, it is an acrylate derivative represented by a formula shown below: (wherein Rrepresents a hydrogen atom, methyl or trifluoromethyl; R, R, R, R, R, Rand Reach represent independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms; Rand Reach represent independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms, or both of Rand Rare combined to represent an alkylene group having 1 to 3 carbon atoms, &#x2014;O&#x2014; or &#x2014;S&#x2014;; and Rrepresents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a cyclic hydrocarbon group having 3 to 10 carbon atoms).

Acrylate derivatives, alcohol derivatives, and method for producing them

The present invention provides an oxygen-absorbing resin composition containing a thermoplastic resin (A) having carbon-carbon double bonds substantially only in the main chain and a transition metal salt (B), and the oxygen absorption amount of 1 mol of carbon-carbon double bond of the thermoplastic resin (A) being 1.6 mols or more.

Oxygen-absorbing resin composition

An oxygen absorption resin composition is provided that comprises a thermoplastic resin (A) having carbon-carbon double bonds substantially in its main chain and a transition metal salt (B). If necessary, the composition further comprises a gas barrier resin (C), a compatibilizer (D) and the like. The composition has excellent oxygen absorption properties, and when the composition is employed, generation of odorous substances derived from the decomposition of resins as a result of oxygen absorption can be suppressed.

Oxygen absorption resin composition

A method of industrially advantageously producing a cyclopropane monoacetal derivative represented by the formula (III) conveniently and also in a fewer steps by reacting a halogenated unsaturated carbonyl compound represented by the formula (II) with an alcoholate. wherein each symbol is as defined in the specification.

Process for producing cyclopropane monoacetal derivative and intermediate therefor

A method for producing a chroman-carboxylic acid is provided, which method includes reacting a dialkylphenol compound, a formaldehyde and an alcohol in the presence of a secondary amine and an acid to give an alkoxymethylated phenol compound (Step 1); reacting the obtained alkoxymethylated phenol compound with an ester having a carbon-carbon double bond at a temperature of not less than 100&deg; C. to give a dialkylchroman carboxylic acid ester (Step 2); hydrolyzing the obtained dialkylchroman carboxylic acid ester to give a dialkylchroman-carboxylic acid (Step 3); and reacting the obtained dialkylchroman-carboxylic acid with an aromatic hydrocarbon in the presence of a Lewis acid (Step 4).

Method for producing chroman-carboxylic acid

A process for producing cyclopropanecarbonitrile involves reacting cyclopropanecarbaldoxime with acetic anhydride to obtain a mixture containing acetic acid and cyclopropanecarbonitrile. The acetic acid can be removed from the mixture through azeotropic distillation of acetic acid with a solvent that forms with acetic acid an azeotropic mixture having an azeotropic point lower than the boiling point of the cyclopropanecarbonitrile.

Process for producing cyclopropanecarbonitrile

A method for producing bromomethylcyclopropane is provided, comprising reacting an organic sulfonyl halide with cyclopropylmethanol in the presence of a tertiary amine in a non-protic solvent, to generate cyclopropylmethyl organic sulfonate, and reacting the resulting cyclopropylmethyl organic sulfonate with an alkali metal bromide and/or a quaternary ammonium bromide in a non-protic polar solvent.

Method for producing bromomethylcyclopropane

1-amino-2-cyclohexene compounds represented by the following formula (I): ##STR1## wherein the substituents are as defined in the specification, a process for preparing the compounds and their use as intermediates in the production of medicinal and agricultural agents is disclosed.

1-amino-2-cyclohexene derivative and production process therefor

In optical resolution of an optically inactive (.+-.)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative into its (+)-derivative and (-)-derivative, the (.+-.)-cis-4-aminocyclopent-2-en-l-carboxylic acid derivative is allowed to react with an optically active cis-2-(arylalkylamino)cyclohexanemethanol or optically active .alpha.-alkylbenzylamine serving as an optically resolving agent, to form diastereomer salts corresponding to the (+)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative and the (-)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative.

Process for optical resolution of

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Okayama, Japan

Tatsuhiko Hayashibara