Organocatalytic enantioselective desymmetrization of cyclic enones via phosphine promoted [3+2] annulations
2010
Pinto, Nathalie | Retailleau, Pascal | Voituriez, Arnaud | Marinetti, Angela
Phosphine catalyzed enantioselective [3+2] cyclizations on 4-substituted 2,6-diarylidenecyclohexanones and 2,4-diarylidene-bicyclo[3.1.0]hexan-3-ones take place with high diastereo- and enantioselectivity levels. The process affords spirocyclic compounds with excellent stereochemical control of up to five stereogenic centres.
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