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Torán, Ricardo; Puchán, Dario; Sanz Marco, Amparo; Vila Descals, Carlos; Pedro, José Ramón; Blay Llinares, Gonzalo | |||
Aquest document és un/a article, creat/da en: 2022 | |||
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An efficient organocatalytic asymmetric Mannich reaction between isoxazol-5(4H)-ones and isatin-derived ketimines has been developed. A bifunctional squaramide/Brønsted base organocatalyst catalyzed the enantioselective Mannich addition to afford chiral 3-aminooxindoles bearing a tetrasubstituted stereocenter at C3 decorated with an isoxazole moiety in good yields and with excellent enantioselectivities. Additionally, several synthetic transformations were described showing the versatility of the prepared compounds. | |||
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