A General and Highly Efficient Protocol for the Synthesis of Chalcogeno­acetylenes by Copper(I)-Terpyridine Catalyst

Abstract

A highly efficient copper-catalyzed C sp -X (X = S, Se, Te) bond-forming reaction of terminal alkynes and diorganyl dichalcogenides has been developed. This transformation was realized through the use of copper(I) iodide as a catalyst, 4′-(4methoxyphenyl)-2,2′:6′,2′′-terpyridine as a ligand, and K 3 PO 4 as a base. A variety of the functionalized substrates were found to react under these reaction conditions to provide products in good to excellent yields.

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

“…Recently, the coordination chemistry of 2,2′:6′,2″‐terpyridines has been of particular interest due to their various applications such as catalysts, in nanoscience, as antibacterial agents and in supramolecular chemistry . As far as Sn–N complexes are concerned, the reported examples consist mostly of species possessing bidentate N‐donor ligands.…”

Design of novel copper(II) and zinc(II) coordination polymers based on the 4′-functionalized terpyridines

“…The 1 H NMR spectrum of [Zn(tpyO)(OCOCH 3 )] (1) in DMSO-d 6 contained two unequal-intensity sets of terpyridine resonances; each of them contained five equal-intensity resonances representing the existence of two species in a 3.7:1 ratio in solution at room temperature. The ratio decreased slightly as the temperature rised.…”

“…The crystal structure of [Zn(tpyO)(OCOCH 3 )] (1) shows the presence of a tpyO À anion. The penta-coordinated Zn(II) atom is in a highly distorted trigonal bipyramidal geometry as reveals by the N(2)-Zn-N(3) angle which deviates significantly from the linearity (151.47(7)°) (Fig.…”

“…2,2 0 :6 0 ,2 00 -Terpyridine ligand (tpy) has been studied for many years as a strong chelating ligand to a variety of metal ions including main group elements, early and late transition metals [1][2][3][4][5][6][7]. These complexes have been studied for their applications including photosensitizers, DNA metallo-intercalators, medicinal chemistry and molecular self assembly for decades [8][9][10][11][12][13][14].…”

“…These complexes have been studied for their applications including photosensitizers, DNA metallo-intercalators, medicinal chemistry and molecular self assembly for decades [8][9][10][11][12][13][14]. We have recently reported that for the formation of chalcogeno-acetylene by copper(I)-terpyridine catalyst, a mixture of copper(I) iodide and atpy results in the best performance among a series of copper(I) salts [3].…”