Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 135, Issue 10, Pages 3784-3787Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja4004816
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- Caltech
- Dow Chemical
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Dinickel bisphenoxyiminato complexes based on highly substituted p- and m-terphenyl backbones were synthesized, and the corresponding atropisomers were isolated. In the presence of a phosphine scavenger, Ni(COD)(2), the phosphine-ligated syn-dinickel complexes copolymerized alpha-olefins and ethylene in the presence of amines to afford 0.2-1.3% alpha-olefin incorporation and copolymerized amino olefins and ethylene with a similar range of incorporation (0.1-0.8%). The present rigid catalysts provide a bimetallic strategy for insertion polymerization of polar monomers without masking of the heteroatom group. The effects of the catalyst structure on the reactivity were studied by comparisons of the syn and anti atropisomers and the p- and m-terphenyl systems.
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