A chemoselective [3+3] cycloaddition of in situ generated azomethine ylides with quinone monoimides has been established, which efficiently led to the construction of dihydrobenzoxazine frameworks with biological relevance, with excellent chemoselectivities and high yields (up to >95 : 5 cr and 98% yield).
![Graphical abstract: Catalytic chemoselective [3+3] cycloadditions of azomethine ylides with quinone monoimides leading to the construction of a dihydrobenzoxazine scaffold](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C5CC03341A&imageInfo.ImageIdentifier.Year=2015)
C. Wang, R. Zhu, Y. Zhang and F. Shi, Chem. Commun., 2015, 51, 11798 DOI: 10.1039/C5CC03341A
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