Yin, Chengyang; Liu, Shuang; Qin, Zhaoxian; Zhang, Yifei; Li, Gao; Zhao, Zhen published their research in European Journal of Inorganic Chemistry in 2021. The article was titled 《Butterfly-Like Tetranuclear Copper(I) Clusters for Efficient Alkyne Homocoupling Reactions》.Application of 2510-22-7 The article contains the following contents:
In this work, we here prepare a new tetranuclear CuI cluster with a precise configuration of Cu4(PPh3)4(bis(prop-2-ynyloxy)biphenyl)2. X-ray single-crystal diffraction shows that the bi-alkynyl ligands bind to two Cu atoms via a σ-bond and to the other two Cu atoms via a π-bond configuration, presenting a new alkynyl-Cu motif and a butterfly-like framework. Cu4(PPh3)4L2 clusters exhibit photoluminescence property at 410 and 505 nm. Cu4(PPh3)4L2 clusters also give good performances in the alkyne homocoupling reactions after its immobilization on different oxides. The copper(I) species is proved to be the catalytic active site during the homocoupling reactions. And the basic property of the oxides (e. g. NiO) can promote the coupling catalysis, and a side-group effect of the alkyne reactants is distinctly observed In all, this study extends the catalytic application of the copper clusters to the carbon-carbon coupling reactions and gives some cue to develop the potential exploitation of copper clusters in other organic transformations. In addition to this study using 4-Ethynylpyridine, there are many other studies that have used 4-Ethynylpyridine(cas: 2510-22-7Application of 2510-22-7) was used in this study.
4-Ethynylpyridine(cas: 2510-22-7) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Application of 2510-22-7