Enantioselective Organocatalytic Enamine C−H Oxidation/Diels‐ Alder Reaction
Authors
Džambaski, Zdravko
Tzaras, Dimitrios‐Ioannis
Lee, Sunggi
Kokotos, Christoforos G.
Bondžić, Bojan

Article (Accepted Version)
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α,β‐unsaturated aldehydes have been traditionally used in LUMO lowering asymmetric aminocatalysis (iminium catalysis), while the use of saturated aldehydes as substrates in this type of catalysis has been elusive, until recently. Herein, we demonstrate that organic, single‐electron oxidants in the presence of diarylprolinol silylether type catalysts serve as effective tools for the transformation of electron rich enamines to iminium ions which partake in a subsequent Diels‐Alder reaction. This enantioselective one‐pot transformation represents the first example of saturated aldehydes being used in domino Diels‐Alder reaction processes and demonstrates the power of this protocol for construction of stereo‐defined chiral compounds and building blocks.
Keywords:
Asymmetric catalysis / Cycloaddition / C−H oxidation / Diarylprolinols / OrganocatalysisSource:
Advanced Synthesis & Catalysis, 2019, 361, 8, 1792-1797Publisher:
- Wiley
Projects:
- COST action CA15106: CH activation in organic synthesis (CHAOS)
- Special Account for Research Grants of the National and Kapodistrian University of Athens
- Experimental and theoretical study of reactivity and biological activity of stereodefined thiazolidines and their synthetic analogues (RS-172020)
Note:
- This is peer-reviewed version of the article: Zdravko Dzambaski, Dimitrios Ioannis Tzaras, Sunggi Lee, Christoforos Kokotos, and Bojan Bondzic, Advanced Synthesis & Catalysis, 2019, 361, 8, 1792-1797, http://dx.doi.org/10.1002/adsc.201900061
- http://cer.ihtm.bg.ac.rs/handle/123456789/2953
DOI: 10.1002/adsc.201900061
ISSN: 1615-4150; 1615-4169