Investigating the effects of bulky allylic substituents on the regioregularity and thermodynamics of ROMP on cyclopentene
Investigating the effects of bulky allylic substituents on the regioregularity and thermodynamics of ROMP on cyclopentene
复制标题
研究大烯丙基取代基对环戊烯 ROMP 的区域规整性和热力学的影响
DOI:
10.1016/j.eurpolymj.2019.109251
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发表时间:
2019
影响因子:
6
通讯作者:
Kennemur, Justin G.
中科院分区:
文献类型:
--
作者:
Guillory, Gina A.;Kennemur, Justin G.
The interplay between equilibrium ROMP thermodynamics and the regioregular insertion of allylic trialkylsiloxy-substituted cyclopentenes during propagation with Hoveyda-Grubbs 2nd generation catalyst at varying temperatures is investigated. In general, bulkier substituents reduce monomer conversion and increase regioregular insertion. However, polymerization entropy (ΔSp) also appears to play an important role on ROMP thermodynamics when compared to ring strain (ΔHp) which is typically the parameter of focus for the efficacy of low-strain monomer conversion. This analysis has allowed for the determination of a “Goldilocks” monomer (i.e. one that provides the best compromise of monomer conversion (56% conversion at −10 °C) and regioregularity (97% HT insertion) to be 3-(tert-butyldimethylsiloxy)cyclopentene which has never before been explored or reported. Due to this study, this monomer has now been identified as the ideal choice for isotactic polypentenamer studies moving forward.
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影响因子:
--
作者:
Hlil, Antsar R.;Balogh, Janos;Bazzi, Hassan S.
通讯作者:
Bazzi, Hassan S.
DOI:
10.1002/pola.28870
发表时间:
2017-12
期刊:
Journal of Polymer Science Part A
影响因子:
--
作者:
Shaofei Song;Zhen Zhang;Xiaoyu Liu;Zhisheng Fu;Junting Xu;Zhiqiang Fan
通讯作者:
Shaofei Song;Zhen Zhang;Xiaoyu Liu;Zhisheng Fu;Junting Xu;Zhiqiang Fan
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Róbert Tuba;M. Al‐Hashimi;Hassan S. Bazzi;R. Grubbs
通讯作者:
R. Grubbs
影响因子:
5.8
作者:
William J. Neary;Brandon A. Fultz;Justin G. Kennemur
通讯作者:
William J. Neary;Brandon A. Fultz;Justin G. Kennemur
影响因子:
4.2
作者:
R. Kieber;William J. Neary;Justin G. Kennemur
通讯作者:
Justin G. Kennemur