Ring-Opening Polymerization of Lactones Catalyzed by Silicon-Based Lewis Acid

IF 3.4 4区 化学 Q2 POLYMER SCIENCE
Y. Nakayama, Keiya Katagi, R. Tanaka, T. Shiono
{"title":"Ring-Opening Polymerization of Lactones Catalyzed by Silicon-Based Lewis Acid","authors":"Y. Nakayama, Keiya Katagi, R. Tanaka, T. Shiono","doi":"10.1155/2023/4391372","DOIUrl":null,"url":null,"abstract":"Many catalysts containing various elements at their active sites have been reported for the ring-opening polymerization (ROP) of cyclic esters. However, to our knowledge, silicon-based catalysts for ROP have never been reported. Here we report the ROP of cyclic esters and cyclic carbonates catalyzed by the derivatives of bis(perchlorocatecholato)silane (Si(catCl)2), which is a neutral silicon-based Lewis acid recently reported by Greb et al. The catalyst systems show high activity for the ROP of seven- and six-membered ring monomers such as ε-caprolactone, δ-valerolactone, and trimethylene carbonate to produce the polymers with molecular weights up to 32 kg/mol. The matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and nuclear magnetic resonance analysis of the obtained polymers indicates the predominant formation of cyclic polymers.","PeriodicalId":14283,"journal":{"name":"International Journal of Polymer Science","volume":null,"pages":null},"PeriodicalIF":3.4000,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Polymer Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1155/2023/4391372","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0

Abstract

Many catalysts containing various elements at their active sites have been reported for the ring-opening polymerization (ROP) of cyclic esters. However, to our knowledge, silicon-based catalysts for ROP have never been reported. Here we report the ROP of cyclic esters and cyclic carbonates catalyzed by the derivatives of bis(perchlorocatecholato)silane (Si(catCl)2), which is a neutral silicon-based Lewis acid recently reported by Greb et al. The catalyst systems show high activity for the ROP of seven- and six-membered ring monomers such as ε-caprolactone, δ-valerolactone, and trimethylene carbonate to produce the polymers with molecular weights up to 32 kg/mol. The matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and nuclear magnetic resonance analysis of the obtained polymers indicates the predominant formation of cyclic polymers.
硅基路易斯酸催化内酯开环聚合的研究
许多在活性位点含有各种元素的催化剂已被报道用于环状酯的开环聚合(ROP)。然而,据我们所知,用于ROP的硅基催化剂从未被报道过。在这里,我们报道了由双(高氯酸盐)硅烷(Si(catCl)2)的衍生物催化的环状酯和环状碳酸酯的ROP,这是Greb等人最近报道的一种中性硅基路易斯酸。催化剂体系对七元和六元环单体如ε-己内酯、δ-戊内酯、,和碳酸三亚甲基酯,以生产分子量高达32的聚合物 千克/摩尔。所获得的聚合物的基质辅助激光解吸/电离飞行时间质谱(MALDI-TOF MS)和核磁共振分析表明主要形成环状聚合物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
6.10
自引率
0.00%
发文量
55
审稿时长
>12 weeks
期刊介绍: The International Journal of Polymer Science is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on the chemistry and physics of macromolecules.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信