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Spirobicyclic and Tetracyclic Pyrazolidinones: Syntheses and Properties

Abstract : The stereoselective syntheses of spirobicyclic and tetracyclic pyrazolidinones are reported based on a (3+2) annu- lation between hydrazones and α-oxoketenes. Some of these conformationally constrained molecules were resolved as enantiopure materials by HPLC techniques and evaluated as amino- catalysts for iminium activation in a model Diels–Alder cyclo- addition.
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Submitted on : Thursday, October 24, 2019 - 2:32:16 PM
Last modification on : Sunday, June 26, 2022 - 2:41:57 AM
Long-term archiving on: : Saturday, January 25, 2020 - 4:38:17 PM

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Fabien Perez, Thibault Leveille, Mathilde Bertolotti, Jean Rodriguez, Yoann Coquerel. Spirobicyclic and Tetracyclic Pyrazolidinones: Syntheses and Properties. European Journal of Organic Chemistry, Wiley-VCH Verlag, 2019, 2019 (35), pp.6034-6043. ⟨10.1002/ejoc.201900989⟩. ⟨hal-02331699⟩

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