Abstract
Cobalt-catalyzed hydroalkynylation of alkynes, alkenes, and imines affords internal alkynes with various functional groups adjacent to the carbon–carbon triple bond moiety in an atom-economical manner. In addition, cross-coupling of in situ generated alkynylcobalt species from terminal alkynes, haloalkynes, and metal acetylides with (hetero)aromatic compounds and organic halides selectively provides various internal aryl- and alkylalkynes.
1 Introduction
2 Hydroalkynylation of Alkynes for 1,3-Enyne Synthesis
3 Hydroalkynylation of Polar and Nonpolar Double Bonds
4 Dehydrogenative Cross-Coupling Reaction Using Terminal Alkynes with Aromatic Compounds
5 Cross-Coupling Reactions Using Haloalkynes as the Coupling Partners
6 Cross-Coupling Reactions Using Metal Acetylides
7 Conclusion
Key words
cobalt - alkynes - alkynylation - dimerization - haloalkynes - metal acetylides