Sumitomo Chemical Company, Limited

Norio Kawamura

Hidenori Hanaoka

Hiroaki Katayama

Masaaki Nabika

Akio Iami

Ichiki Takemoto

Akio Imai

Akira Miyashita

Yoshihiko Ito

Tamio Hayashi

Transition metal complex, catalyst for olefin polymerization, and

An olefin polymerization catalyst component is represented by the general formula (1): ##STR1## wherein M is a transition metal of the 4.sup.th Group or the Lanthanide Series in the Periodic Table; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R' represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst along with an aluminum or born-containing cocatalyst to produce an olefin polymer or copolymer.

Olefin polymerization catalyst component

An olefin polymerization catalyst component is represented by the general formula (1); ##STR1## wherein M is titanium, zirconium or hafnium; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R' represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst to produce an olefin polymer.

An optically active arylacetic acid derivative of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are each an hydrogen atom, a lower alkyl group or a phenyl group; and Ar is a group of the formula: ##STR2## a group of the formula: ##STR3## wherein R.sub.3 and R.sub.4 are the same or different and are each a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a difluoromethoxy group, a trifluoromethyl group or a phenyl group is prepared in good conversion and optical yield by asymmetrically reducing an ethylenically unsaturated compound of the formula: ##STR4## wherein R.sub.1, and R.sub.2 and Ar are the same as defined above with hydrogen in the presence of a metal catalyst modified with a ligand selected from the group consisting of a specific optically active metallocenyl phosphine derivative and a specific optically active binaphthyl derivative.

Process for preparing optically active arylacetic acid derivative

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Chiba, Japan

Norio Kawamura