{"title":"Steric Hindrance Tuned [4 + 1] Annulation of α-Substituted Conjugated Enones with Ylides for Dihydrofuran Synthesis","authors":"Jiaxin Chu, Haoran Wang, Sunewang R. Wang","doi":"10.1021/acs.orglett.4c03930","DOIUrl":null,"url":null,"abstract":"In sharp contrast to the intuitive modulation by the electronic effect, the [4 + 1] annulation reaction between α-substituted conjugated enones and ylides has been reliably controlled by the match of the α-substituent and the ylide in steric hindrance, providing a straightforward and efficient method for valuable 4-cyano, 4-alkynyl, 4-vinyl, and 4-aryl 2,3-dihydrofurans.","PeriodicalId":54,"journal":{"name":"Organic Letters","volume":"55 1","pages":""},"PeriodicalIF":4.9000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organic Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.orglett.4c03930","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
引用次数: 0
Abstract
In sharp contrast to the intuitive modulation by the electronic effect, the [4 + 1] annulation reaction between α-substituted conjugated enones and ylides has been reliably controlled by the match of the α-substituent and the ylide in steric hindrance, providing a straightforward and efficient method for valuable 4-cyano, 4-alkynyl, 4-vinyl, and 4-aryl 2,3-dihydrofurans.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.