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Silica Gel‐Supported Cinchona Alkaloid‐OsO4 Complex for Catalytic Heterogeneous Asymmetric Dihydroxylation of Olefins by H2O2 using a Titanium Silicalite‐Based Coupled Catalytic System |
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| Authors: | Boyapati&#x;M Choudary Naidu&#x;S Chowdari Karangula Jyothi Sateesh Madhi Mannepalli&#x;L Kantam |
| Abstract: | A triple catalytic system designed for asymmetric dihydroxylation of olefins, composed of NMM and two divergent heterogeneous catalysts, titanium silicalite and silica gel‐supported 1,4‐bis(9‐O‐dihydroquinidinyl)phthalazine SGS‐(DHQD)2PHAL)]‐OsO4 complex relays the transport of two electrons from olefin to H2O2 used as a terminal oxidant to provide chiral diols with good yields and high enantiomeric excesses in a single pot. |
| Keywords: | asymmetric synthesis diols immobilization olefins osmium oxidation |