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- W2040887079 abstract "Abstract Highly enantioselective Michael addition of 1,3‐dicarbonyl compounds and nitromethane to 4‐oxo‐4‐arylbutenoates catalyzed by N , N′ ‐dioxide–Sc(OTf) 3 complexes has been developed. Using 0.5–2 mol % catalyst loading, various α‐stereogenic esters were obtained regioselectively with excellent yields (up to 97 %) and enantioselectivities (up to >99 % ee ). Moreover, the reaction performed well under nearly solvent‐free conditions. The products with functional groups are ready for further transformation, which showed the potential value of the catalytic approach. According to the experimental results and previous reports, a plausible working model has been proposed to explain the origin of the activation and the asymmetric induction." @default.
- W2040887079 created "2016-06-24" @default.
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- W2040887079 date "2010-08-26" @default.
- W2040887079 modified "2023-10-18" @default.
- W2040887079 title "Highly Enantioselective Synthesis of α-Stereogenic Esters through Catalytic Asymmetric Michael Addition of 4-Oxo-4-arylbutenoates" @default.
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- W2040887079 doi "https://doi.org/10.1002/chem.201001129" @default.
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