Takasago International Corporation

Cosmo Oil Co., Ltd.

Cosmo Research Institute

Other

Tasoh Corporation

Sotaro Miyano

Tetsutaro Hattori

Hitoshi Kumagai

Setsuko Miyanari

Shuichi Oi

Nobuhiko Iki

Takashi Miura

Hidenori Kumobayashi

Noboru Sayo

Nobuyuki Koike

Shingo Kato

Masahiro Ishizuka

Tsutomu Hashimoto

Fumio Hamada

Yutaka Suzuki

Yoshihiro Sugawa

Mitsuharu Hasegawa

Osamu Uesugi

Yasufumi Tamai

Masayuki Shijo

Toyohisa Fujimoto

Kenta Sakurai

Yasuko Komuro

Naoya Morohashi

Yoshiyuki Hiraishi

Fumitaka Narumi

SULFONATED DERIVATIVES OF CYCLIC PHENOL SULFIDES, PROCESS FOR THE PREPARATION THEREOF, SEPARATING AND RECOVERING AGENTS CONTAINING CYCLIC PHENOL SULFIDES, METHODS FOR SEPARATION AND RECOVERY THEREWITH, AND DRUG COMPOSITIONS CONTAINING THE SULFIDES

Disclosed is a process for producing an optically active .beta.-lactone represented by the general formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having 1-9 carbon atoms which can be branched or a cycloalkyl group having 5-7 carbon atoms. The process comprises reacting an aldehyde represented by the general formula (II):

Process for producing optically active .beta.-lactones

Cyclic phenol sulfide having at least one sulfinyl or sulfonyl group and

The present invention provides a process for producing a .beta.-lactone derivative by reacting an aldehyde represented by formula (1):

Process for producing a .beta.-lactone derivative

A composition for extracting a transition metal which comprises as an active ingredient a cyclic phenol sulfide represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom, a hydrocarbon group, an acyl group, a carboxyalkyl group, or a carbamoylalkyl group; Y represents a hydrocarbon group; Z represents a sulfide group, a sulfinyl group, or a sulfonyl group; and n is an integer of 4 to 8; and a method for extracting a transition metal using the composition

Composition for extracting transition metal and method for extracting

The novel optically active 1,1'-biphenanthryl-2,2'-diol is disclosed, which is obtained by preparing N((S)-1-phenylethyl)-1,1'-biphenanthryl-2,2'-diylthiophosphorylamide by using optically active phenylethylamine, recrystallizing the compound into an optically active compound, followed by reduction with a reducing agent. The diol compound according to the present invention is useful as a resolving reagent, a starting material of an optically active phosphine compound or a ligand in asymmetric synthesis, forming a complex with a transition metal or a rare earth element to provide a useful catalyst.

Optically active 1,1'-biphenanthryl-2,2'-diol, process for preparing the

A 1-substituted-2-diphenylphosphinonaphthalene represented by formula (I): ##STR1## wherein at least one of R.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, represents a lower alkyl group having 1 to 4 carbon atoms which may be substituted with an alkoxy group, a phenyl group or --OR.sup.6 (wherein R.sup.6 represents a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms or an alcohol-protective group), and the rest of them represent a hydrogen atom; A represents a single bond or a methylene group; and R.sup.5 represents a substituted or unsubstituted phenyl group; and a transition metal complex comprising the 1-substituted-2-diphenylphosphinonaphthalene as a ligand. The transition metal complex is useful as a catalyst in asymmetric synthesis.

1-substituted-2-diphenylphosphinonaphthalene and transition metal

A packing material for liquid chromatography comprising (S)- or (R)-1,1'-bianthryl-2,2'-dicarboxylic acid as stationary phase.

Packing material for liquid chromatography

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Miyagi, Japan

Sotaro Miyano