Vinylcarbenoids are used as three-carbon components in Rh(III)-catalyzed C–H activation/[4 + 3] cycloaddition with benzamides to access azepinones. This transformation makes a feature of simple starting materials, mild reaction conditions and high efficiency. A kinetic isotope effect study was conducted and a plausible mechanism is proposed.
![Graphical abstract: Rh(iii)-catalyzed C–H activation/[4 + 3] cycloaddition of benzamides and vinylcarbenoids: facile synthesis of azepinones](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C3SC51777B&imageInfo.ImageIdentifier.Year=2013)
S. Cui, Y. Zhang, D. Wang and Q. Wu, Chem. Sci., 2013, 4, 3912 DOI: 10.1039/C3SC51777B
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