Abstract
More applications of N-heterocyclic carbenes for annulations were developed via designing suitable substrates. These reactions added synthetically interesting examples for N-heterocyclic carbene catalysis. We believe the new strategies for N-heterocyclic carbenes catalyzed annulations will find more valuable applications in organic synthesis.
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References
Chen X-Y, Sun L-H, Ye S (2013) N-Heterocyclic carbene catalyzed [4+2] cycloaddition of nitroalkenes with oxodienes. Chem Eur J 19:4441–4445
Chen X-Y, Xia F, Cheng J-T, Ye S (2013) Highly enantioselective γ-amination by N-heterocyclic carbene catalyzed [4+2] annulation of oxidized enals and azodicarboxylates. Angew Chem Int Ed 52:10644–10647
Chen X-Y, Gao Z-H, Song C-Y, Zhang C-L, Wang Z-X, Ye S (2014) N-heterocyclic carbene catalyzed cyclocondensation of α, β-unsaturated carboxylic acids: enantioselective synthesis of pyrrolidinone and dihydropyridinone derivatives. Angew Chem Int Ed 53:11611–11615
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Chen, X. (2017). Summary. In: New Strategies for N-Heterocyclic Carbenes Catalyzed Annulations. Springer Theses. Springer, Singapore. https://doi.org/10.1007/978-981-10-2899-1_5
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DOI: https://doi.org/10.1007/978-981-10-2899-1_5
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