Toray Industries, Inc.

Satoru Miyata

Eiichi Minomiya

Shinzo Imamura

Jiro Nakatani

Tetsuya Kato

Hiromi Fukuda

Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor

A method for isomerizing a halogenated ethylbenzene characterized by bringing the same into contact with an acidic zeolite containing at least one metal selected among metals of Groups 7 to 11; and a method of efficiently isolating a m-halogenated ethylbenzene from a mixture of halogenated ethylbenzene isomers by adsorption using a specific zeolite X or Y as the adsorbent. The isomerization method enables a halogenated ethylbenzene to be efficiently isomerized with the zeolite catalyst. The separation method enables m-chloroethylbenzene to be efficiently separated from a mixture of chloroethylbenzene isomers by using a specific zeolite as the adsorbent.

Method for isomerizing halogenated ethylbenzene and method for separating halogenated ethylbenzene isomers

A resolving agent for N-acetylindoline-2-carboxylic acid, comprising an optically active .alpha.-amino-.epsilon.-caprolactam gives an optically active N-acetylindoline-2-carboxylic acid in both high yield and high optical purity.

Method for preparing optically active N-acetylindoline-2-carboxylic acid

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Aichi, Japan

Satoru Miyata