Application of 32717-95-6. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about An N-heterocyclic carbene ligand promotes highly selective alkyne semihydrogenation with copper nanoparticles supported on passivated silica. Author is Kaeffer, Nicolas; Liu, Hsueh-Ju; Lo, Hung-Kun; Fedorov, Alexey; Coperet, Christophe.
A surface organometallic route that generates copper nanoparticles (NPs) on a silica support while simultaneously passivating the silica surface with trimethylsiloxy groups is reported. The material was active for the catalytic semihydrogenation of phenylalkyl, dialkyl and diaryl alkynes and displayed high chemo- and stereoselectivity at full alkyne conversion to corresponding (Z)-olefins in the presence of an N-heterocyclic carbene (NHC) ligand. Solid-state NMR spectroscopy using the NHC ligand 13C-labeled at the carbenic carbon revealed a genuine coordination of the carbene to Cu NPs. The presence of distinct Cu surface environments and the coordination of the NHC to specific Cu sites likely accounted for the increased selectivity.
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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider