Formal [2+2] cycloaddition of arynes with 2-imidazolones affords syn-1,2-diaminobenzocyclobutenes. The transformation can also be conducted as a one-pot, three-stage process direct from simple propargyl amines and isocyanates to afford the new stereochemically defined benzocyclobutene frameworks.
![Graphical abstract: syn-1,2-Diaminobenzocyclobutenes from [2+2] cycloaddition of 2-imidazolones with arynes](/sk/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D4CC04023F&imageInfo.ImageIdentifier.Year=2024)
H. Ur Rehman Shah, Q. Li and C. R. Jones, Chem. Commun., 2024, 60, 11928 DOI: 10.1039/D4CC04023F
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