Faraday Discussions最新文献

{"title":"Synthesis and ring-opening (co)polymerization of lactones derived from the cotelomerization of isoprene, butadiene, and CO₂.","authors":"Ryan J Anderson, Takuya Akiyama, Ian A Tonks","doi":"10.1039/d5fd00034c","DOIUrl":"https://doi.org/10.1039/d5fd00034c","url":null,"abstract":"<p><p>Herein, we report ring-opening polymerizations and copolymerizations of substituted δ-lactones derived from isoprene, butadiene, and CO₂. While the telomerization of CO₂ with butadiene to form a disubstituted δ-lactone is well-established, the similar telomerization of isoprene with CO₂-or cotelomerization of isoprene and butadiene with CO₂-has been less studied. Our initial efforts focused on identifying the factors that govern yield and selectivity in the cotelomerization of isoprene, butadiene, and CO₂. The most effective cotelomerization/hydrogenation reaction sequence was scaled-up, leading to mixtures of two isoprene-butadiene coupled lactones, 3-ethyl-6-(prop-1-en-2-yl)tetrahydro-2<i>H</i>-pyran-2-one (EtPeP), and 3-ethyl-6-methyl-6-vinyltetrahydro-2<i>H</i>-pyran-2-one (EtVMeP) and the butadiene homocoupled lactone, 3-ethyl-6-vinyltetrahydro-2<i>H</i>-pyran-2-one (EtVP). The ratios of these three lactones varied depending on the telomerization conditions and purification methods employed. Stepwise syntheses of pure EtVMeP and EtPeP<i>via</i> alternate routes were also carried out. The pure lactones as well as lactone mixtures were subjected to organocatalyzed ring-opening (co)polymerization (ROP) using triazabicyclodecene (TBD), yielding CO₂-based copolymers with molar masses (<i>M</i>_n) ranging from 5.5 to 12.7 kDa and narrow dispersities (<i>Đ</i> = 1.3). Increasing the proportion of EtPeP relative to EtVP led to a notable increase in the glass transition temperature (<i>T</i>_g) of the copolymers, reaching -20.5 °C. While EtPeP underwent successful ring-opening polymerization, reactions with EtVMeP resulted in termination of the polymerization owing to the formation of a non-nucleophilic tertiary alkoxide chain end. Thus, small amounts of EtVMeP can have a deleterious effect on copolymerizations of lactone mixtures derived from cotelomerization. These results motivate further development in the selective synthesis of EtPeP<i>via</i> cotelomerization of butadiene and isoprene with CO₂.</p>","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145068596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paediatric hydrocephalus","authors":"K. Kahle, Petra M. Klinge, Jenna E. Koschnitzky, Abhaya V. Kulkarni, Nanna MacAulay, Shenandoah Robinson, Steven J. Schiff, J. Strahle","doi":"10.1038/s41572-024-00519-9","DOIUrl":"https://doi.org/10.1038/s41572-024-00519-9","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"23 9","pages":"1-16"},"PeriodicalIF":81.5,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140967670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paediatric hydrocephalus","authors":"","doi":"10.1038/s41572-024-00527-9","DOIUrl":"https://doi.org/10.1038/s41572-024-00527-9","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"42 2","pages":"1-24"},"PeriodicalIF":81.5,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140971237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Severe cutaneous adverse reactions","authors":"S. Hung, Maja Mockenhaupt, Kimberly G. Blumenthal, Riichiro Abe, Mayumi Ueta, Saskia Ingen-Housz-Oro, Elizabeth J. Phillips, Wen-Hung Chung","doi":"10.1038/s41572-024-00514-0","DOIUrl":"https://doi.org/10.1038/s41572-024-00514-0","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"8 6","pages":"1-25"},"PeriodicalIF":81.5,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140654246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Poster list","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"246 ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"List of participants","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"246 ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41228441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iontronic dynamics: general discussion","authors":"Mark Aarts, Martin Z. Bazant, Lydéric Bocquet, Fabio Cicoira, Robert A. W. Dryfe, Sanli Faez, Y. K. Catherine Fung, Ehud Haimov, Bee Hockin, Christian Holm, Tim M. Kamsma, Frédéric Kanoufi, Alexei A. Kornyshev, Serge G. Lemay, Yan Levin, Sophie Marbach, Elalyaa Mohamed, Joan Montes de Oca, Frieder Mugele, Monica Olvera de la Cruz, Susan Perkin, Jenny Pringle, Paul Robin, Benjamin Rotenberg, Alexander Schlaich, Igor Siretanu, Zuzanna S. Siwy, Derek Stein, René van Roij, Tanja Vidaković-Koch, Kislon Voïtchovsky, Gilad Yossifon and Yujia Zhang","doi":"10.1039/D3FD90032K","DOIUrl":"10.1039/D3FD90032K","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"246 ","pages":" 322-355"},"PeriodicalIF":3.4,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41090532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iontronic coupling: general discussion","authors":"Sidahmed Abayzeed, Tarique Anwar, Alexander Barnaveli, Martin Z. Bazant, Lyderic Bocquet, Aleksandar Donev, Robert A. W. Dryfe, Sanli Faez, Amritha Janardanan, Felipe Jiménez-Ángeles, Tim M. Kamsma, Frédéric Kanoufi, Alexei A. Kornyshev, Serge G. Lemay, Yan Levin, Sophie Marbach, Joan Montes de Oca, Paul Robin, Zuzanna S. Siwy, Derek Stein, Rene van Roij, Tanja Vidaković-Koch, Gilad Yossifon and Yujia Zhang","doi":"10.1039/D3FD90031B","DOIUrl":"10.1039/D3FD90031B","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"246 ","pages":" 157-178"},"PeriodicalIF":3.4,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41090783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laboratory astrochemistry of the gas phase: general discussion","authors":"Nadia Balucani, Michelle Brann, Sandra Brünken, Cecilia Ceccarelli, Martin Cordiner, Eric M. Crump, Kevin M. Douglas, Adam J. Fleisher, Athena Flint, Jack Fulker, Robin T. Garrod, Murthy S. Gudipati, Divita Gupta, Joshua Halpern, Dwayne E. Heard, Eric Herbst, Emily K. Hockey, Ko-Yun Huang, Ugo Jacovella, Inga Kamp, Alexander K. Lemmens, Nikku Madhusudhan, Martin R. S. McCoustra, Brett McGuire, Anthony Meijer, Cristina Puzzarini, Daniël B. Rap, Ian R. Sims, Mark H. Stockett, Ardjan Sturm, Arthur G. Suits, Ewine F. van Dishoeck, Serena Viti, Nicholas Walker, Susanna Widicus Weaver, Laurent Wiesenfeld and Olivia H. Wilkins","doi":"10.1039/D3FD90025H","DOIUrl":"https://doi.org/10.1039/D3FD90025H","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"245 ","pages":" 391-445"},"PeriodicalIF":3.4,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24849612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational astrochemistry: general discussion","authors":"Stefan T. Bromley, Sandra Brünken, Cecilia Ceccarelli, Martin Cordiner, Kristen Darnell, Gwenaëlle Dufour, Athena Flint, Robin T. Garrod, Murthy S. Gudipati, Joshua Halpern, Eric Herbst, Ko-Yun Huang, Inga Kamp, Nikku Madhusudhan, Martin R. S. McCoustra, Arthur G. Suits, Marie Van de Sande, Ewine F. van Dishoeck, Serena Viti and Laurent Wiesenfeld","doi":"10.1039/D3FD90027D","DOIUrl":"https://doi.org/10.1039/D3FD90027D","url":null,"abstract":"","PeriodicalId":76,"journal":{"name":"Faraday Discussions","volume":"245 ","pages":" 620-637"},"PeriodicalIF":3.4,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24849656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}