Abstract
During exploration of the nickel(0)-catalyzed reaction of isocyanates and isatoic anhydrides, it was found that changes in the substitution pattern of the isocyanate led to constitutionally isomeric quinazolinediones [quinazoline-2,4(1H,3H)-diones] or benzoxazinone imines [2-imino-1,2-dihydro-4H-3,1-benzoxazin-4-ones]. Ligand and solvent screening experiments allowed for identification of conditions that could lead to each constitutional isomer in good to excellent levels of selectivity and yield. Comprehensive characterization of the previously poorly characterized benzoxazinone imines is also provided.
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