Oxidative enantioselective

PhlO, cat chiral Mn salen complex, pyridine N-oxide (enantioselective)... 

An investigation of various catalysts, the solvent, and the additive used in the meso-stilbene oxide enantioselective ring opening with anilines at room temperature has been carried out.29 The best catalyst, solvent, and additive proved to be (17), toluene and triphenylphosphane, respectively. The reaction gave 95% of the syn-fi-wm m alcohol with 78% ee. A single recrystallization increased the enantiomeric excess to 98%. The catalyst is recyclable. 

The enzymatic Baeyer-Villiger oxidation enantioselective synthesis of lactones from mesomeric cyclohexanones, J. Am. Chem. Soc. 1988, 110, 6892-6893. 

Dinuclear or polynuclear manganese complexes of salen-type ligands were also tested in the epoxidation of olefins with H2O2 as oxidant. Enantioselective epoxidation of several olefins with urea-H202 and a dinuclear Mn-salen type of complex has been reported by Kureshy and co-workers (130). Conversions of more than 99 % ee were obtained with chromenes and... 

Toribatake K, Nishiyama H. Asymmetric diboration of terminal alkenes with a rhodium catalyst and subsequent oxidation enantioselective synthesis of opticaUy active 1,2-diols. Angetv Chem Int Ed Engl. 2013 52 11011-11015. 

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