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We report on the synthesis of the first examples of 1,3-azaborinine derived oxindole systems, the BN-isosteres of the important compound class of the oxindoles. Hydroboration of terminal aryl acetylenes with FmesBH2, followed by treatment with 2 equiv. of a glycine ester derived isonitrile gave a small series of 1,3-azaborinine derived oxindoles. The new BN-oxindoles show interesting photophysical behavior.
J. Li, C. G. Daniliuc, J. Matern, G. Fernández, G. Kehr and G. Erker, Chem. Commun., 2021, 57, 7689 DOI: 10.1039/D1CC02557K
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