Solvias Ag

Weiping Chen

Benoît Pugin

Felix Spindler

Ulrike Nettekoven

Felix Spiindler

Peter Phoenix Chemicals Ltd Mccormack

Compounds of the formula I in the form of enantiomerically pure diastereomers or a mixture of diastereomers, (I), where the radicals Rare identical or different and are each C-C-alkyl; m is 0 or an integer from 1 to 3; n is 0 or an integer from 1 to 4; Ris a hydrocarbon radical or a C-bonded heterohydrocarbon radical; Cp is unsubstituted or C-C-alkyl-substituted cyclopentadienyl; Y is a C-bonded chiral group which directs metals of metallation reagents into the ortho position; and Phos is a P-bonded P(III) substituent. The compounds are chiral ligands for complexes of transition metals which are used as homogeneous catalysts in asymmetric syntheses. 

Ferrocenediphosphines

Abstract Compounds of the formula (I) in the form of racemates, enantiomerically pure diastereomers or a mixture of diastereomers, where the radicals Rare identical or different and are each C-C-alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; Ris an aromatic hydrocarbon radical or a C-bonded heterohydrocarbon radical and Ris an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; Rand Rare identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; Ris an unsubstituted or C-C-alkyl-, C-C-alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group, are ligands for metal complexes which are suitable as catalysts for homogeneous enantioselective hydrogenation. 

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Weiping Chen