Publication

Electrophilic alkynylation: the dark side of acetylene chemistry

Jérôme Waser, Jonathan Brand
2012
Journal paper
Abstract

In addition to the well-established nucleophilic alkynylation, the use of electrophilic alkynes can expand tremendously the scope of acetylene transfer reactions. The use of metal catalysis has recently led to a rebirth of this research area. Halogenoalkynes, hypervalent alkynyliodoniums, acetylene sulfones and in situ oxidized terminal acetylenes are the most often used reagents for electrophilic alkynylation. Heteroatoms such as N, O, S and P can be now efficiently alkynylated. For C-C bond formation, electrophilic acetylenes can be coupled with different organometallic reagents. Recently, the first breakthrough in direct C-H and C=C bond alkynylation has also been reported. Finally, sulfonyl acetylenes are efficient for alkyne transfer on carbon-centered radicals.

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