Recent developments and trends in the iron- and cobalt-catalyzed Sonogashira reactions

• Surendran Amrutha,
• Sankaran Radhika and
• Gopinathan Anilkumar

Beilstein J. Org. Chem. 2022, 18, 262–285, doi:10.3762/bjoc.18.31

• complex of cobalt and N-heterocyclic ligand supported on carbon nanotubes and pure cobalt nanoparticles was developed [37]. Propargylamine derivatives were synthesized in extremely high yields in green solvents by this catalyst. The catalytic system can be easily recovered and reused 7 times without any

A new and efficient methodology for olefin epoxidation catalyzed by supported cobalt nanoparticles

• Lucía Rossi-Fernández,
• Viviana Dorn and
• Gabriel Radivoy

Beilstein J. Org. Chem. 2021, 17, 519–526, doi:10.3762/bjoc.17.46

• Lucia Rossi-Fernandez Viviana Dorn Gabriel Radivoy INQUISUR-CONICET, Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, Bahía Blanca, B8000CPB, Argentina 10.3762/bjoc.17.46 Abstract A new heterogeneous catalytic system consisting of cobalt nanoparticles (CoNPs) supported on

• materials and it could be recovered and reused maintaining its unaltered high activity. Keywords: alkenes; cobalt nanoparticles; epoxides; oxidation; TBHP; Introduction Olefin oxidation reactions are key synthetic transformations in the production of oxygenated chemicals of high interest for both academic

• the other hand, the use of supported cobalt nanoparticles as efficient catalysts for the epoxidation of olefins has received increasing attention in the last years. In most cases, a crucial influence of the support (TiO2, HAP, CNTs, SBA, SiO2), the oxidant agent (molecular oxygen or TBHP) and the