In recent years, organometallic chemistry has made great progress in the development of transition-metal complexes with application in different areas of chemistry, especially in catalysis. The advances have been achieved by using different kinds of ligands, but N-donor ligands have attracted more attention due to the steric and electronic properties of their complexes, enhancing their reactivity. In this work we are presenting the synthesis of Rh(I) complexes with NHC and triazenide ligand functionalized with hindered imidazoles, their characterization and catalytic activity. The complexes were obtained by direct reaction of potassium triazenide with [RhCl(coe)IPr]2 in THF using inert conditions to obtain [Rh(coe)(triazenide)IPr] 2a and 2b and then the addition of CO to form [RhCO(triazenide)IPr] 3a and 3b (Scheme 1). All complexes were used as catalyst in the hydrothiolation of alkynes with thiols (Eq 1) in high selectivity to α-vinyl sulfides.

Rhodium complexes with N-heterocyclic carbene and triazenide ligands as catalysts for alkyne hydrothiolation

253rd National Meeting (2017)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.