Organocatalytic regioselective Michael additions of cyclic enones via asymmetric phase transfer catalysis |
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| Authors: | Ceccarelli Roberto Insogna Susanna Bella Marco |
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| Affiliation: | Dipartimento di Chimica and Istituto di Chimica Biomolecolare del CNR-Sezione di Roma, Università La Sapienza, P le Aldo Moro 5, 00185-Roma, Italy. |
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| Abstract: | Cyclohexanone and cycloheptanone can be enantioselectively functionalized in the 3-position with up to 92% ee and 87% ee, respectively, by the base-promoted dimerization of the corresponding enones using 3,4,5-tribenzyloxybenzyl cinchoninium bromide, as a new effective catalyst. |
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