Abstract

The chiral Mn (Ⅲ) salen complexes have proven to be the most effective catalyst for asymmetric epoxidation of unfunctionalized olefins, which are highly significant in the pharmaceutical, agrochemical and spice fields to synthesize chiral building blocks that could be transformed into other useful chiral compounds through regioselective ring-opening reactions or by the selective transformation of functional groups. This paper reviews the homogeneous chiral Mn (salen) catalyst and the heterogeneous chiral Mn (salen) catalysts which immobilized onto organic polymer, inorganic support and organic polymer-inorganic hybrid materials catalyzed enantioselectivity epoxidation reactions of unfunctional olefins

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