Advanced Synthesis & Catalysis最新文献

筛选
英文 中文
Stereoselective Palladium-Catalyzed C(sp3)–H Mono-Arylation of Piperidines and Tetrahydropyrans with a C(4) Directing Group 带C(4)导向基团的胡椒啶和四氢吡喃的立体选择性钯催化C(sp3) -H单芳基化
Advanced Synthesis & Catalysis Pub Date : 2021-11-08 DOI: 10.33774/chemrxiv-2021-ks58d
Amalia-Sofia Piticari, Daniele Antermite, Joe I Higham, J. Moore, Matthew P. Webster, J. Bull
{"title":"Stereoselective Palladium-Catalyzed C(sp3)–H Mono-Arylation of Piperidines and Tetrahydropyrans with a C(4) Directing Group","authors":"Amalia-Sofia Piticari, Daniele Antermite, Joe I Higham, J. Moore, Matthew P. Webster, J. Bull","doi":"10.33774/chemrxiv-2021-ks58d","DOIUrl":"https://doi.org/10.33774/chemrxiv-2021-ks58d","url":null,"abstract":"A selective Pd-catalyzed C(3)–H cis-functionalization of piperidine and tetrahydropyran carboxylic acids is achieved using a C(4) aminoquinoline amide auxiliary. High mono- and cis-selectivity is attained by using mesityl carboxylic acid as an additive. Conditions are developed with significantly lower reaction temperatures (≤50 °C) than other reported heterocycle C(sp3)–H functionalization reactions, which is facilitated by a DoE optimization. A one-pot C–H functionalization-epimerization procedure provides the trans-3,4-disubstituted isomers directly. Divergent aminoquinoline removal is accomplished with the installation of carboxylic acid, alcohol, amide and nitrile functional groups. Overall fragment compounds suitable for screening are generated in 3–4 steps from readily-available heterocyclic carboxylic acids.","PeriodicalId":7248,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72971255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Synthesis of α- and β-Carbolines by a Metalation/Negishi Cross-Coupling/SNAr Reaction Sequence 金属化/根岸交叉偶联/SNAr反应序列合成α-和β-碳胺
Advanced Synthesis & Catalysis Pub Date : 2021-08-26 DOI: 10.33774/CHEMRXIV-2021-P8WCV
Shainthavaan Sathiyalingam, Stefan Roesner
{"title":"Synthesis of α- and β-Carbolines by a Metalation/Negishi Cross-Coupling/SNAr Reaction Sequence","authors":"Shainthavaan Sathiyalingam, Stefan Roesner","doi":"10.33774/CHEMRXIV-2021-P8WCV","DOIUrl":"https://doi.org/10.33774/CHEMRXIV-2021-P8WCV","url":null,"abstract":"Carbolines are considered to be privileged scaffolds in medicinal chemistry. An efficient method for the synthesis of α- and β-carbolines from fluoropyridines and 2-haloanilines is reported. This streamlined procedure consists of a four-step directed ortho-lithiation, zincation, Negishi cross-coupling, and intramolecular nucleophilic aromatic substitution, providing access to a diverse set of functionalized carbolines. While the procedure is applicable to batch conditions, the generation of arylzinc intermediates in continuous flow has been demonstrated.","PeriodicalId":7248,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75835543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
0
×
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×
相关产品
×
本文献相关产品
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