Recent Advances in N-Heterocyclic Carbene Coinage Metal Complexes in A3-Coupling and Carboxylation Reaction

Owing of their accessibility and wide range reactivities, alkynes make for fascinating building blocks. Either a selective alkyne carbon-carbon triple bond reaction or activation the terminal C-H may be employed to functionalize them. Monocationic coinage metal complexes with d10 electronic configuration are effective catalysts activation. Silver(I) gold(I) N-heterocyclic (NHC) systems emerging as promising in multicomponent reactions; this review paper focuses on A3 (aldehyde-amine-alkyne)-coupling carbon dioxide fixation, furnishing systematic overview scientific advances achieved during last two decades. This study will carefully compare corresponding silver gold processes. The differences routes brought about by catalyst ligand structure investigated an emphasis evaluating benefits provided easily tuneable NHC backbone, terms chemo- stereo-selectivity.