Zirconocene-alkyne complexes prepared from Cp2ZrBu2, phosphines and alkynes reacted with CO to give double carbonylation products, 4-hydroxycyclobuten-1-one derivatives after hydrolysis.

CuO hollow nanostructures have been used for the catalytic [3 + 2] cycloaddition of azides with terminal alkynes to provide the products in good yields with high regioselectivity.

5-Aryl-2(5H)-furanones can be synthesized by the Rh-catalyzed reactions of arylboronic acids with internal alkynes under a CO atmosphere.

The first synthesis of 2-iodoynamides is described as well as the first [2+2] cycloadditions of ketene with iodo alkynes.

A simple titanium complex catalyzes the coupling of alkynes, isonitriles, and monosubstituted hydrazines to generate substituted pyrazoles in a single step.

A variety of 1,1,2-trisubstituted-1H-indenes are synthesized by the reaction of aliphatic ketones, aryl-substituted alkynes and NbCl3(DME) in 1,2-dichloroethane under reflux conditions.

Copper-catalyzed enantioselective borylative cyclization with various electrophiles via difunctionalization of unsaturated hydrocarbons is a powerful tool for the generation interesting boron-containing carbocycles and heterocycles processes involving chiral organocopper intermediate. Alkenes, allenes, alkynes are versatile easily accessible substrates that can be subjected to wide range reacti...

A lead- and palladium-free alternative to the Lindlar catalyst has been developed for industrially relevant alkyne semi-hydrogenation using silica-supported nickel nanoparticles modified by nitrogen-doped carbon. The optimal acts under mild conditions (5 bar H2, 100 °C, 4 h) selective of a range alkynes, including vitamin precursors that are important food supplements. Notably, this novel is al...

A latent catalyst for the [3+2] cycloaddition reaction of azides and alkynes has been developed in accordance with the principles of Click chemistry.

The treatment of activated alkynes with catalytic amounts of Stryker’s reagent and tributylstannane resulted in hydrostannation. The reaction proceeds with high regioselectivity to produce α-stannated vinylstannanes exclusively.