Facile, Novel Methodology for the Synthesis of Spiro |
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| Authors: | Alper Meyers Lerchner Siegel Carreira |
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| Institution: | Laboratorium für Organische Chemie, ETH-Zentrum, Universit?tstrasse 16, CH-8092 Zürich (Switzerland). |
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| Abstract: | The role of the bifunctional catalyst is decisive: The magnesium ion as Lewis acid and its nucleophilic iodide counterion contribute in synergy to the successful ring expansion of the cyclopropane 1 by aldimine 2 Eq. (1)]. This reaction offers a novel route to spiropyrrolidin-3,3'-oxindoles] 3. |
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