Abstract: Bisphosphite ligands based on benzopinacol with an open outer unit, and the use thereof in hydroformylation.

Abstract: Ligands based on phosphonite phosphites, and the use thereof in hydroformylation.

Abstract: The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.

Abstract: (EN) The invention relates to the use of novel organophosphoric compounds and metal complexes thereof in catalytic reactions, and to the hydroformylation of olefins in the presence of these compounds.

Abstract: In the present application protection is sought for compounds of the general formula (I) as ligands for reactions catalysed by transition metals. The preparation thereof and use thereof, in particular for the preparation of ?-amino acids, is also discussed.

Abstract: The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.

Abstract: This application claims the benefit of German priority Application No. 10138140.9, filed on Aug. 9, 2001, and International Application No. PCT/EP02/08748, filed on Aug. 6, 2002. The invention relates to the production of amines by the reaction of aldehydes or ketones with ammonia or primary or secondary amines in the presence of a hydrogen-donor and the presence of homogeneous metal catalysts of the eighth sub-group under mild conditions.

Abstract: According to the invention, a process for the preparation of a statin is provided, comprising the following steps: a) preparation of a compound of the formula II in which S1 denotes a hydrogen atom or a hydroxylprotective group, S2 and S3, independently of one another, denote hydroxylprotective groups and R1 represents a hydrogen atom or a carboxylprotective group, by stereoselective hydrogenation of a compound of the formula III to give a compound of the formula II-a and optionally introduction of a hydroxylprotective group and b) lactonization of the compound of the formula II to give a compound of the formula I-a

Abstract: The present invention relates to a method for the preparation of H8-1,1?-bi-2-naphthyl derivatives of the formula (II) by reduction of the corresponding binaphthyl derivatives by hydrogen in the presence of a catalyst containing at least one metal selected from the group Pt, Ir, Os, Pd, Rh, Ru, Ni, Co and Fe applied to a solid support.

Abstract: Phosphites of the formula I 1

Abstract: Phosphites of the formula I or II 1

Abstract: The invention relates to the bisphosphites of the general formula(I), wherein R1, R2, R3, $4 R5 R6 represent H, an aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aliphatic-aromatic hydrocarbon group with 1 to 50 carbon atoms, F, Cl, Br, I, —OR7, —COR7, —CO2R7, —CO2M, —SR7, —SO2R7, —SOR7, —SO3R7, —SO3M, —SO2NR7R8, NR7R8, N═CR7R8, NH2, wherein R1 to R6 are the same or different and can be covalently linked with each other, R7, R8 represent H, a substituted or unsubstituted, aliphatic or aromatic hydrocarbon group with 1 to 25 carbon atoms, which are the same or different, M represents an alkali metal, alkaline earth metal, ammonium, phosphonium ion; Q represents a bivalent, aliphatic alicyclic, aliphatic-alicyclic, heterocyclic, aromatic, aliphatic-aromatic hydrocarbon group with 1 to 50 carbons atoms, W, X represent aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromati

Abstract: A bisphosphite of the formula I 1

Abstract: Phosphinines of formula (I) can be combined with metal salts to prepare hydroformylation catalysts. The phosphinine complexes have two phosphorus centers that may be substituted with a variety of hetero atoms or alkyl substituents to modify the ligand characteristics of the phosphinine. Phosphinine metal complexes are employed under normal hydroformylation reaction conditions. The preparatory routes to the phosphinine ligands of formula (I) allow for their convenient synthesis.

Abstract: Phospholanes and diphospholanes of the formula I ##STR1## where: R.sup.1 and R.sup.2 are, independently of one another, C.sub.1 -C.sub.6 -alkyl, aryl, alkylaryl,R.sup.1 is also hydrogen,A is either R.sup.1 or ##STR2## B is a linker having 1-5 carbon atoms between the two phosphorus atoms, and their use as catalyst in asymmetric synthesis.