Enantioselective preparation and structural and conformational analysis of the chiral solvating agent α,α′-bis(trifluoromethyl)-1,8-anthracenedimethanol
The preparation of the enantiomers of α,α′-bis(trifluoromethyl)-1,8-anthracenedimethanol is described, and their conformational behaviour studied. These enantiomers are very active when used as chiralsolvatingagents in the presence of several compounds.
Ligands for pnicogen chelate complexes with a metal of subgroup VIII and use of the complexes as catalysts for hydroformylation, carbonylation, hydrocyanation or hydrogenation
申请人:——
公开号:US20040110960A1
公开(公告)日:2004-06-10
Pnicogen chelate compounds which have two pnicogen-containing groups joined to one another via a xanthene-like or triptycene-like molecular skeleton and in which at least one pyrrole group is covalently bound via its nitrogen atom to each pnicogen atom form complexes with metals of transition group VIII which are useful as catalysts for the hydroformylation of olefins.