Bayer Aktiengesellschaft

Georg Schroder

Dieter Arlt

Christian Laue

Manfred Jautelat

Carlhans Suling

Jurgen Reiners

Wolf-Dieter Schroer

Janos Muszik

Henning Bachem

Rolf Grosser

The invention relates to enantiomerically pure bisphosphines of the general formula (I) ##STR1## where R is as defined in the description, a process for their preparation and their use in metal complexes as catalysts for asymmetric reactions, in particular asymmetric hydrogenations.

Bisphosphines as catalysts for asymmetric reactions

The invention relates to novel enantiomerically pure bisphosphines of the general formula (I) ##STR1## in which R, R.sup.1 and R.sup.2 have the meanings given in the description, a process for the preparation thereof and the use thereof in metal complexes as catalysts for asymmetric hydrogenations.

Bisphosphines for asymmetric hydrogenation catalysts

The present invention relates to novel 2-arylpropenoic acids, derivatives thereof, processes for their preparation and their use in the preparation of S-ketoprofen.

Intermediates and their use in the preparation of s-ketoprofen

Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or diyhalogenohydrin are used for imparting wet strength to paper.

Nitrogen-containing polymeric compounds

Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or dihalogenohydrin are used for imparting wet strength to paper.

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Leverkusen, Germany

Georg Schroder