Chiral Amino Diol Derivatives as New Modular Organocatalysts for the Enantioselective α‐Chlorination of Cyclic β‐Keto Esters |
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Authors: | Pablo Etayo Ramn Badorrey María D Díaz‐de‐Villegas Jos A Glvez |
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Abstract: | Highly modular chiral amino diol derivatives have been used as organocatalysts in the enantioselective α‐chlorination of cyclic β‐keto esters. Optimization of the catalyst structure and the reaction conditions has allowed the synthesis of optically active α‐chlorinated products with high enantioselectivities (up to 96% ee) using inexpensive commercially available N‐chlorosuccinimide (NCS) as the chlorine source under mild conditions. |
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Keywords: | amines asymmetric catalysis chlorination enantioselectivity β ‐keto esters organocatalysis |
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