Journal
ORGANIC LETTERS
Volume 3, Issue 1, Pages 91-93Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol006807d
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- NCI NIH HHS [CA40157] Funding Source: Medline
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[GRAPHICS] A new methodology for the synthesis of substituted alkynes is described. In the presence of copper(I) thiophene 2-carboxylate (CuTC) or copper (I) 3-methylsalicylate (CuMeSal), the palladium-catalyzed cross-coupling of thioalkyne derivatives with boronic acids affords functionalized alkynes in yields ranging from 39 to 91%. This coupling occurs efficiently under mild, nonbasic conditions with a wide variety of thioalkynes and boronic acids, providing a reaction complementary to the Sonogashira protocol.
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