Designing 8-shaped polymer topology by metathesis condensation with cyclic poly(THF) precursors having allyl groups

Macromolecules

Volumn 36, Issue 1, 2003, Pages 12-17

  Tezuka, Yasuyuki ^a   Komiya, Ryota ^a   Washizuka, Masakazu ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

PRECURSORS;

CATALYSTS; CONDENSATION REACTIONS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; SYNTHESIS (CHEMICAL); TOPOLOGY;

AROMATIC POLYMERS;

EID: 0037435640     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma021495a     Document Type: Article

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23. 2 relaxation.
24. The isomerization of allyl ethers to the internal vinyl ether could take place under high dose of a Grubbs catalyst, and this could lead to the deactivation of the catalyst. See: Maynard, H. D.; Grubbs, R. H. Macromolecules 1999, 32, 6917-6924.
25. During the intramolecular metathesis condensation, one of the two allyl groups in the precursor polymer reacts with a Grubbs catalyst to form an intermediate Ru-carbene complex, followed by the unimolecular reaction with another allyl group. This first-order process could be favored in comparison with the second-order intermolecular reaction, thus avoiding from concurrent side reactions like a self-decomposition of the Ru-carbene species.