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Enantioselective Access to Robinson Annulation Products and Michael Adducts as Precursors

Abstract : The Robinson annulation is a reaction that has been useful for numerous syntheses since its discovery in 1935, especially in the field of steroid synthesis. The products are usually obtained after three consecutive steps: the formation of an enolate (or derivative), a conjugate addition, and an aldol reaction. Over the years, several methodological improvements have been made for each individual step or alternative routes have been devised to access the Robinson annulation products. The first part of this Review outlines the most relevant developments towards the formation of monocarbonyl-derived Robinson annulation products (MRA products, MRAPs) and activated monocarbonyl-derived Robinson annulation products (AMRA products, AMRAPs). The following sections are then devoted to the diastereoselective and enantioselective synthesis of these products, while the last section describes the enantiomeric resolution of racemic mixtures.
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https://hal-univ-lemans.archives-ouvertes.fr/hal-01912415
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Soumis le : lundi 5 novembre 2018 - 14:02:36
Dernière modification le : jeudi 6 octobre 2022 - 03:55:44

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Florian Gallier, Arnaud Martel, Gilles Dujardin. Enantioselective Access to Robinson Annulation Products and Michael Adducts as Precursors. Angewandte Chemie International Edition, 2017, 56 (41), pp.12424 - 12458. ⟨10.1002/anie.201701401⟩. ⟨hal-01912415⟩

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