Highly enantioselective Michael addition of ketones to nitroolefins catalyzed by (S)-pyrrolidine arenesulfonamide |
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Affiliation: | Department of Chemistry, Texas A&M University-Commerce, Commerce, TX 75429-3011, USA |
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Abstract: | A new type of catalyst for the asymmetric Michael addition reaction has been designed and synthesized. This catalyst, (S)-pyrrolidine arenesulfonamide 1, resulted in high yields (up to 93%), excellent diastereoselectivities (syn/anti ratio up to 99/1), and excellent enantioselectivities (ee up to 99%) for various cyclic ketones and nitroolefins. |
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