FERROCENE-DIPHOSPHINE LIGANDS

摘要

Compounds of the formula (I) in the form of racemates, mixtures of stereoisomers or optically pure stereoisomers, formula (I), where X<SUB>1</SUB> and X<SUB>2</SUB> are each, independently of one another, a secondary phosphino group; R<SUB>1</SUB> is a halogen atom or a substituent bound via a C atom, N atom, S atom, Si atom, a P(O) group or a P(S) group to the cyclopentadienyl ring; R<SUB>2</SUB> is C<SUB>1</SUB>-C<SUB>4</SUB>-alkyl or phenyl; m is from 1 to 3 and n is 0 or from 1 to 5, are ligands for complexes of transition metals as enantioselective and homogeneous catalysts. As a result of the substitution, the conversion, the stereoselectivity and/or the configuration of the adduct formed can be influenced and optimization of catalysts can be made possible in this way.