22612-93-7Relevant articles and documents
Effects of backbone substituent and intra-ligand hydrogen bonding interaction on ethylene polymerizations with Α-diimine nickel catalysts
Zhong, Liu,Du, Cheng,Liao, Guangfu,Liao, Heng,Zheng, Handou,Wu, Qing,Gao, Haiyang
, p. 113 - 123 (2019)
The design of transition metal catalysts and the development of new catalyst design strategies for olefin polymerization have received substantial attention in the field of polyolefin research. In this paper, we initially reported backbone substituent eff
N- Heterocyclic carbene palladium complex with butterfly structure and application thereof (by machine translation)
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, (2020/05/30)
N - Heterocyclic carbene palladium complex, with a butterfly structure prevents aromatic amine from encircling carbon-nitrogen bond upset, and in a steric hindrance C11 framework structure to inhibit C12 coupling reaction, between nitrogen-containing heterocyclic chlorine and low-activity nitrogen-containing heterocyclic boronic acid and reaction can be carried out β - under mild conditions of air and water at the same time to ensure higher reaction yield, The present invention also greatly improves the reaction activity, Suzuki - Miyaura of the catalyst. (by machine translation)
Transition metal mediated exo selective Diels-Alder reactions: Preparation of 2-cobalt-substituted 1,3-dienes containing C2 symmetric 2,3-dibenzobicyclo[2.2.2]octanedione dioxime equatorial ligands and their use in thermal and Lewis acid catalyzed 4 + 2 cycloadditions
Wright, Marcus W.,Welker, Mark E.
, p. 133 - 141 (2007/10/03)
The preparation of C2 symmetric 2,3-dibenzobicyclo[2.2.2]octanedione dioxime is reported. This ligand is then used in the preparation of a (pyridine)(glyoxime)2cobalt(III) chloride complex. The chloride is reduced to a cobaloxime anion which reacted with allenic electrophiles to produce (pyridine)(glyoxime)2cobalt-1,3-dienyl complexes. Thermal and Lewis acid catalyzed Diels-Alder reactions of these dienyl complexes as well as the complexes with glyoxime = diphenylglyoxime and dimethylglyoxime are reported. In most cases these Diels-Alder reactions are anti (exo) selective, and in many cases diastereoselectivities are >20:1. Cycloadduct demetalation reactions are also reported which preserve cycloaddition stereochemistry and provide cobalt complexes which can be recycled into the starting dienyl complex.