Abstract
1,n-Enynes are a versatile class of unsaturated hydrocarbons that find broad applications in the synthetic community of natural products, biologically active structures and functional materials. Typical methods for the transformations of 1,n-enynes include the radical-mediated [2+2+m] annulation reaction as they are particularly efficient accesses to functionalized polycyclic compounds. We herein highlighted recent process in the radical-mediated [2+2+m] annulation of 1,n-enynes, including [2+2+1] and [2+2+2] modes, for the construction of five- to six-membered-ring-fused polycyclic scaffolds. Meanwhile, the mechanisms for these transformations were described.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21625203, 21871126) and the Jiangxi Province Science and Technology Project (20182BCB22007).
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Xu, CH., Li, Y., Li, JH. et al. Recent advances in radical-mediated [2+2+m] annulation of 1,n-enynes. Sci. China Chem. 62, 1463–1475 (2019). https://doi.org/10.1007/s11426-019-9615-0
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DOI: https://doi.org/10.1007/s11426-019-9615-0