185913-98-8Relevant articles and documents
Process for preparing oprtically active trimethyllactic acid and its ester
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, (2008/06/13)
The invention relates to a novel process for preparing optically active trimethyllactic acid and/or its esters by catalytic hydrogenation of trimethylpyruvic acid and/or its esters in the presence of noble metal complex catalysts containing phosphorus ligands.
Diphosphines
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, (2008/06/13)
The invention relates to the preparation and use as catalysts of diphosphines of the formula (I) in which R is C6-C14-aryl or C4-C13-heteroaryl containing 1 to 3 heteroatoms selected from the group consisting of
Process for the preparation of enantiomerically pure (5,5'-dichloro-6,6'-dimethoxy-biphenyl-2,2'-diyl)- bis(diphenylphosphine oxides)
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, (2008/06/13)
The invention relates to the preparation of enantiomerically pure bis-diphenylphosphine oxides in a particularly advantageous manner by (1) reacting an aromatic bromine compound with a diphenylphosphinic chloride in a mixture of tetrahydrofuran and an aro