1326244-52-3Relevant academic research and scientific papers
Diboron as a reductant for nickel-catalyzed reductive coupling: Rational design and mechanistic studies
Zhang, Guoying,Xie, Yinjun,Wang, Zhengkun,Liu, Yang,Huang, Hanmin
supporting information, p. 1850 - 1853 (2015/01/30)
Diboron (B2pin2) has been identified as an efficient and environmentally benign reducing reagent for reductive coupling reactions for the first time, which enables the nickel-catalyzed reductive tetramerization of alkynes to be performed with high efficiency. Mechanistic and kinetic studies indicate that the facile reductive elimination to form the B-B bond from the dinuclear Ni-Ni complexes is responsible for the high efficiency. The activation enthalpy (ΔH? = 56.5 kJ mol-1), entropy (ΔS? = -128 J mol-1 K-1) and the substituent effect (ρ = 1.43) on this reaction were obtained.
Nickel-catalyzed tetramerization of alkynes: Synthesis and structure of octatetraenes
Wu, Tsun-Cheng,Chen, Jheng-Jhih,Wu, Yao-Ting
supporting information; experimental part, p. 4794 - 4797 (2011/11/12)
In the presence of a catalytic system comprised of NiBr2(dppe) and Zn, arylacetylenes undergo tetramerization to form linear octatetraenes, generally in good to excellent yields. The structure of the coupling products was verified by X-ray crystallography.
