Abstract
AbstractAn efficient, ruthenium(II)‐catalyzed, solvent‐free approach for the synthesis of 2‐aryloxypyridines with good to excellent yields has been developed by the reaction of 1,6‐diynes with aryl cyanates. This atom‐economical catalytic strategy offers a mild and practical approach to access a variety of such cycloadducts with excellent regioselectivities. The protocol was further extended to the synthesis of 2,2′‐ and 2,3′‐diaryloxybipyridines by the reaction of tetraynes with aryl cyanates.magnified image
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