Abstract
A novel palladium-catalyzed tandem cyclization and carbonylation of 2-alkynylanilines has been developed for the construction of indeno[1,2-b]indol-10(5H)-one scaffolds. By using formic acid as the CO source, this reaction proceeded smoothly to afford various indeno[1,2-b]indol-10(5H)-one derivatives in high yields. Notably, this protocol can be used in modifications of several bioactive molecules.
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