476454-75-8Relevant articles and documents
NNN ligand compound, cobalt-NNN complex as well as preparation methods and application thereof
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Paragraph 0110; 0111; 0112; 0113; 0114, (2019/01/16)
The invention relates to an NNN ligand compound with a coordination bond being formed by three N atoms, a cobalt-NNN complex formed by the NNN ligand compound, as well as preparation methods and application thereof. In particular, the NNN ligand compound contains pyridine and imine structures. The ligand compound and a cobalt complex thereof can efficiently catalyze the hydrosilylation reaction ofalkynes. The NNN ligand compound and the cobalt-NNN complex have the advantages of mild reaction conditions, high selectivity, wide substrate range, high yield and high purity. Moreover, the target product has higher economic value, and is suitable for industrialized production.
An NNN-Pincer-Cobalt Complex Catalyzed Highly Markovnikov-Selective Alkyne Hydrosilylation
Ibrahim, Jessica Juweriah,Yang, Yong,Zhang, Shaochun
supporting information, (2018/10/09)
A new NNN pincer (amine-pyridine-imine, API) cobalt complex, which is bench-stable and is applicable for the highly efficient and regioselective hydrosilylation of terminal alkynes, is developed. A broad set of α-vinylsilanes was successfully synthesized in good to high yields with up to 98/2 Markovnikov regioselectivity. This protocol can be readily scaled up for gram-scale synthesis and demonstrates the most efficient cobalt-catalyzed hydrosilylation of alkynes with turnover frequencies as high as 126720 h-1 to date.
