Angewandte Chemie International Edition
10.1002/anie.201913088
COMMUNICATION
resistance to environmental stress cracking and low temperature
impact.[ This tandem process represents a fascinating route to
copolymerization route produces copolymers with unique
microstructures. For example, the copolymerization of ethylene
with dimethyl maleate produces copolymers with ester groups at
adjacent positions. This microstructure is in direct contrast with a
The authors declare no conflict of interest.
50]
Keywords: olefin polymerization • palladium • metathesis • polar
monomer • tandem catalysis
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1
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and compared with the poly(ethylene-co-methyl acrylate) sample
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(
M
n
and a slightly higher molecular weight. Despite the slightly lower
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a phosphine-sulfonate palladium catalyst.
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copolymer molecular weight without significantly suppressing
comonomer incorporation when utilizing the direct route. To
address this dilemma, a tandem route was designed by combing
ruthenium-catalyzed ethenolysis with palladium-catalyzed
copolymerization. The good compatibility of ruthenium and
palladium catalysts enables a one-pot, two-step procedure that
leads to the formation of high molecular weight copolymers with
high comonomer incorporation. This work greatly expands the
scope of polar comonomer substrates, notably by including many
bioderived comonomers. More importantly, this work creates
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microstructures and new properties.
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Acknowledgement
This work was supported by National Natural Science Foundation
of China (NSFC, 21690071 and 21704094), and the Fundamental
Research Funds for the Central Universities.
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Conflict of interest
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