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Ruthenium-catalyzed direct ortho-alkynylation of arenes with chelation assistance
The ruthenium-catalyzed direct alkynylation of arenes with the chelation assistance of nitrogen-containing heterocycles including pyridine, pyrimidine, pyrazole, and imidazole are described. The alkynylation is successful even in the presence of an acidic N-H bond. Broad compatibility with functional groups is observed under catalytic conditions. The obtained alkynylated products could serve as precursors for polycyclic heteroarenes. Copyright
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Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H2606O – PubChem