Synlett p. 363 - 364 (1997)
Update date:2022-08-04
Topics: Electron transfer NMR spectroscopy Catalyst Ligand Stereochemistry Enantioselectivity Diastereoselective Reaction Mechanism Reducing Agent Substrate Reductive Coupling Homogeneous Catalysis Cyclopentadienyl Oxidation state carbonyl compound Reaction yield Titanocene Pinacol coupling Metallocene
Gans?uer, Andreas
A novel catalytic pinacol coupling utilising 3 mol % of the readily available rac-ethylenebis(η5-tetrahydroindenyltitanium) dichloride (EBTHITiCl2) as catalyst is described. Diastereoselectivities are in excess of 95:5. The reaction conditions for the coupling of aromatic aldehydes are mild and tolerate a variety of functional groups interfering with dihydroxylation reactions and McMurry coupling reactions.
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