A new and facile tandem reaction of intramolecular hydroamination and novel [4 + 3] cycloaddition was developed for the synthesis of multitudinal indole-containing 5,7,6-tricyclic skeletons. This method was further extended to the quick synthesis of a series of useful motif of natural products, such as the core of ervatamine and silicine.
![Graphical abstract: One pot hydroamination/[4 + 3] cycloaddition: synthesis towards the cyclohepta[b]indole core of silicine and ervatamine](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C4RA13249A&imageInfo.ImageIdentifier.Year=2014)
J. Zhang, J. Shao, J. Xue, Y. Wang and Y. Li, RSC Adv., 2014, 4, 63850 DOI: 10.1039/C4RA13249A
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