This study describes a regioselective ,'-diborylation of aromatic triazenes catalyzed by [Ir(OMe)(cod)] in near-quantitative yields without an additional ligand. Aromatic triazenes act as both substrates and ligands. The X-ray structures of and indicate that the monoborylation products could promote the occurrence of diborylation. The synthesized triazene-substituted diboronate esters could undergo a variety of transformations including directing group removal. One-pot sequential modification provides a short entry to densely functionalized arenes.
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| http://dx.doi.org/10.1021/acs.orglett.2c00994 | DOI Listing |
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