{"title":"Chiral Bis-8-Aryl-isoquinoline Bis-alkylamine Iron Catalysts for Asymmetric Oxidation Reactions","authors":"Tomer Mintz, Lei Liu and Doron Pappo*, ","doi":"10.1021/acs.orglett.5c0005010.1021/acs.orglett.5c00050","DOIUrl":null,"url":null,"abstract":"<p >A novel class of bis-8-aryl-isoquinoline (<sup><b>Ar</b></sup><b>iQ</b>) bis-alkylamine iron complexes, Fe<sup>II</sup>(<sup><b>Ar</b></sup><b>iQ<sub>2</sub>dp</b>)(OTf)<sub>2</sub> and Fe<sup>II</sup>(<sup><b>Ar</b></sup><b>iQ<sub>2</sub>mc</b>)(OTf)<sub>2</sub> (<b>dp</b> = dipyrrolidinyl or <b>mc</b> = <i>N</i>,<i>N</i>′-dimethylcyclohexyl-diamine), for asymmetric oxidation reactions is reported. The scalable divergent synthesis of 8-aryl-3-formylisoquinolines (<b>8</b>), the key intermediates in preparing these ligands, enables precise structural and electronic tuning around the metal center. The enantioselective epoxidation and hydroxy carbonylation of conjugated alkenes, mediated by the Fe<sup>II</sup>(<sup><b>3,5-di-CF<sub>3</sub></b></sup><b>iQ<sub>2</sub>dp</b>) catalyst with H<sub>2</sub>O<sub>2</sub> as the oxidant, demonstrates the potential of these redox Fe<sup>II</sup>[N<sub>4</sub>] catalysts in inducing face selection in oxygen transfer transformations.</p>","PeriodicalId":54,"journal":{"name":"Organic Letters","volume":"27 4","pages":"1078–1083 1078–1083"},"PeriodicalIF":5.0000,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.orglett.5c00050","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organic Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.orglett.5c00050","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
A novel class of bis-8-aryl-isoquinoline (AriQ) bis-alkylamine iron complexes, FeII(AriQ2dp)(OTf)2 and FeII(AriQ2mc)(OTf)2 (dp = dipyrrolidinyl or mc = N,N′-dimethylcyclohexyl-diamine), for asymmetric oxidation reactions is reported. The scalable divergent synthesis of 8-aryl-3-formylisoquinolines (8), the key intermediates in preparing these ligands, enables precise structural and electronic tuning around the metal center. The enantioselective epoxidation and hydroxy carbonylation of conjugated alkenes, mediated by the FeII(3,5-di-CF3iQ2dp) catalyst with H2O2 as the oxidant, demonstrates the potential of these redox FeII[N4] catalysts in inducing face selection in oxygen transfer transformations.
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.