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For a review, see: Jusseau, X.; Chabaud, L.; Guillou, C. Synthesis of γ-Butenolides and, -Unsaturated γ-Butyrolactams by Addition of Vinylogous Nucleophiles to Michael Acceptors. Tetrahedron 2014, 70, 2595-2615.
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An example with the related, -unsaturated γ-butyrolactam has been reported, see
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An example with the related, -unsaturated γ-butyrolactam has been reported, see: Jiang, X.; Liu, L.; Zhang, P.; Zhong, Y.; Wang, R. Catalytic Asymmetric, γ Activation of, -Unsaturated γ-Butyrolactams: Direct Approach to, γ-Functionalized Dihydropyranopyrrolidin-2-ones. Angew. Chem. Int. Ed. 2013, 52, 11329-11333.
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β γ-Regioselective inverse-electron-demand aza-diels-alder reactions with, -unsaturated aldehydes via dienamine catalysis
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CCDC 1054121 (4a) and 1054131 (5a) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via
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CCDC 1054121 (4a) and 1054131 (5a) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html.
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