Metathesis Polymerization of 5-n-Butyl-2-Norbornene in the Presence of Dimethyl Maleate

The interaction of the second-generation Grubbs catalyst and dimethyl maleate is investigated. It is shown that this interaction affords a new ruthenium-carbene complex capable of participating in the metathesis reaction. The metathesis homopolymerization of cyclooctene and 5- n -butyl-2-norbornene...

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Published inPolymer science. Series B Vol. 65; no. 6; pp. 760 - 772
Main Authors Stepanyants, V. R., Nazemutdinova, V. R., Zhigarev, V. A., Sadovnikov, K. S., Wozniak, A. I., Morontsev, A. A., Bermeshev, M. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2023
Springer Nature B.V
Subjects
Catalysts
Chain transfer
Chemistry
Chemistry and Materials Science
Decomposition reactions
Metathesis
Polymer Sciences
Polymerization
Ruthenium
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Summary:The interaction of the second-generation Grubbs catalyst and dimethyl maleate is investigated. It is shown that this interaction affords a new ruthenium-carbene complex capable of participating in the metathesis reaction. The metathesis homopolymerization of cyclooctene and 5- n -butyl-2-norbornene mediated by the first- or second-generation Grubbs catalyst in the presence of dimethyl maleate acting as a chain transfer agent is studied in detail. Conditions for the synthesis of previously unknown telechelic poly(5- n -butyl-2-norbornene) are optimized. The formation of heterodyads between the polyene block and dimethyl maleate fragments is revealed. Effect of the concentration of initial reactants, their ratio, accessibility of the main-chain double bond of polyene, catalyst type, temperature, and reaction time on the molecular weight and depth of the cross-metathesis reaction is explored. The efficiency of using dimethyl maleate as a chain transfer agent is demonstrated.
ISSN:1560-0904
1555-6123
DOI:10.1134/S1560090423600249