Abstract: Disclosed are a phosphine derivative represented by formula (I): wherein Ar represents a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group, a transition metal complex comprising the phosphine derivative or a polymer thereof as a ligand, and a process for producing an optically active amino acid compound by asymmetric hydrogenation using the transition metal complex as a catalyst.

Abstract: A 2′-diarylphosphino-1,1′-biphenylen-2-yloxy(6,6′-divinyl-1,1′-binaphthalene-2,2′-diyloxy)phosphine derivative is disclosed, which is represented by general formula (I): wherein Ar is an optionally substituted phenyl or naphthyl; R1 and R2 each independently is a hydrogen atom, a lower alkyl, a lower alkoxy, etc.; and R3 is a lower alkyl, a lower alkoxy, etc.; provided that R2 and R3 may be bonded to each other to form a hydrocarbon ring, which may have one or more substituents selected from lower alkyl groups, halogen atoms, vinyl, etc. Also disclosed are a polymer having structural units derived from the phosphine derivative and a transition metal complex obtained by causing a transition metal compound to act on the phosphine derivative.

Abstract: A transition metal complex of a polymer of 2'-diarylphosphino-1,1'-biphenylen-2-yloxy(6,6'-divinyl-1,1'-binaphthalene -2,2'-diyloxy)phosphine derivative is disclosed, which is represented by general formula (I): ##STR1## wherein Ar is an optionally substituted phenyl or naphthyl; R.sup.1 and R.sup.2 each independently is a hydrogen atom, a lower alkyl, a lower alkoxy, etc.; and R.sup.3 is a lower alkyl, a lower alkoxy, etc.; provided that R.sup.2 and R.sup.3 may be bonded to each other to form a hydrocarbon ring, which may have one or more substituents selected from lower alkyl groups, halogen atoms, vinyl, etc. Also disclosed are a polymer having structural units derived from the phosphine derivative and a transition metal complex obtained by causing a transition metal compound to act on the phosphine derivative or the polymer. A novel polymer-supported ligand is provided which, when used as a catalyst for asymmetric syntheses, gives satisfactory results concerning catalytic activity, enantiomer excess, etc.

Abstract: A 6-vinyl-2'-diarylphosphino-1,1'-binaphthalen-2-yloxy(biphenylene-2,2'-diyl oxy)phosphine derivative is disclosed, which is represented by general formula (I): ##STR1## wherein Ar is an optionally substituted phenyl or naphthyl; R.sup.1 and R.sup.2 each independently is a hydrogen atom, a lower alkyl, a lower alkoxy, etc.; and R.sup.3 is a lower alkyl, a lower alkoxy, etc.; provided that R.sup.2 and R.sup.3 may be bonded to each other to form a hydrocarbon ring, which may have one or more substituents selected from lower alkyl groups, halogen atoms, vinyl, etc. Also disclosed are a polymer having structural units derived from the phosphine derivative and a transition metal complex obtained by causing a transition metal compound to act on the phosphine derivative or the polymer. A novel polymer-supported ligand is provided which, when used as a catalyst for asymmetric syntheses, gives satisfactory results concerning catalytic activity, enantiomer excess, etc.

Abstract: Disclosed is a ruthenium-phosphine complex represented by formula (I):?{RuX(L)}.sub.2 (.mu.-X).sub.3 !.sup.- ?R.sub.2 NH.sub.2 !.sup.+(I)wherein R is hydrogen, an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted benzyl group; X is halogen; and L is an optically active or inactive tertiary phosphine. A process for preparing the complex (I) is also disclosed, which comprises (A) reacting a ruthenium complex represented by formula: ?RuX(arene)(L)!X (wherein arene is a substituted or unsubstituted phenyl group) and an ammonium salt represented by formula (III): R.sub.2 NH.HX, or (B) reacting a ruthenium complex represented by formula: ?RuX.sub.2 (arene)!.sub.2, a tertiary phosphine represented by L, and an ammonium salt (III). The complex (I) useful as a catalyst for general syntheses or asymmetric syntheses can be obtained easily in good yield.

Abstract: Disclosed are an optically active diphosphine represented by formula: ##STR1## wherein R represents a lower alkyl group having 1 to 4 carbon atoms; Ar represents a phenyl group which may be substituted with a lower alkyl group having 1 to 4 carbon atoms and/or a lower alkoxy group having 1 to 4 carbon atoms, a transition metal complex containing the diphosphine as a ligand, and a process for producing an optically active .delta.-oxo-.alpha.-cyano ester using the transition metal complex as a catalyst.

Abstract: A process for producing optically active polyketone which comprises allowing a mono-substituted ethylene to react with carbon monoxide in the presence of a palladium-phosphine complex formed from a phosphine represented by the following general formula (I) ##STR1## (wherein Ar.sup.1 is a phenyl group which may be substituted with one or more substituent groups selected from a lower alkyl group, a lower alkoxy group and a halogen) and a palladium salt. An isotactic (stereoregular) optically active polyketone having high molecular weight (Mn) in which the direction of a mono-substituted ethylene against ketone is a head to tail type (positional regularity) can be produced efficiently by a simple and easy process for the copolymerization of propylene, styrene or the like mono-substituted ethylene with carbon monoxide.

Abstract: A phosphine compound represented by one of the formulas: ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represent a phenyl group or a phenyl group substituted with a halogen atom or a lower alkyl group or taken together form a divalent hydrocarbon group; and R.sup.3 and R.sup.4, which may be the same or different, each represent a lower alkyl group, a phenyl group or a phenyl group substituted with a halogen atom, a lower alkyl group or a lower alkoxy group or taken together form a divalent hydrocarbon group, and wherein R.sup.6 and R.sup.6' which may be the same or different, each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; R.sup.5, R.sup.5', R.sup.11 and R.sup.11' which may be the same or different, each represent a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom; or a pair of R.sup.5 and R.sup.6 or a pair of R.sup.5' and R.sup.6' may form a ring; R.sup.7 and R.sup.