Asymmetric Dihydroxylation Of Olefins Research Articles

ChemInform Abstract: A Ligand Structure‐Enantioselectivity Relationship for the Osmium‐ Catalyzed Asymmetric Dihydroxylation of Olefins.

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Stereoselective reactions. XIX. Asymmetric dihydroxylation of olefins by employing osmium tetroxide-chiral amine complexes.

Enantioselective dihydroxylation of E-stilbene afforded (1S, 2S)-1, 2-diphenyl-1, 2-ethanediol in 70% ee by employing a stoichiometric amount of osmium tetroxide-chiral amine 5, prepared from N-methylephedrine and 2-bromopyridine.

ChemInform Abstract: Asymmetric Dihydroxylation of Alkenes with Osmium Tetroxide: Chiral N,N′‐Dialkyl‐2,2′‐bipyrrolidine Complex.

AbstractThe bipyrrolidines (I) are used as chiral catalysts for the enantioselective osmylation of alkenes such as (II) or (IV).

Asymmetric dihydroxylation of alkenes with osmium tetroxide: chiral N,N′-dialkyl-2,2′-bipyrrolidine complex

Asymmetric osmylation of alkenes by using N,N′-dialkyl-2,2′-bipyrrolidines as the chiral ligands shows a high asymmetric induction and a marked dependence of the enantioselectivity on both the N-alkyl group and the reaction solvent.