Nickel(II)/Salox-Catalyzed Enantioselective C–H Functionalization

IF 12.7 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Jia-Hao Chen, Qi-Jun Yao, Ming-Yu Zhong, Tian-Yu Jiang, Fan-Rui Huang, Xiang Li and Bing-Feng Shi*, 
{"title":"Nickel(II)/Salox-Catalyzed Enantioselective C–H Functionalization","authors":"Jia-Hao Chen,&nbsp;Qi-Jun Yao,&nbsp;Ming-Yu Zhong,&nbsp;Tian-Yu Jiang,&nbsp;Fan-Rui Huang,&nbsp;Xiang Li and Bing-Feng Shi*,&nbsp;","doi":"10.1021/acscentsci.4c0204910.1021/acscentsci.4c02049","DOIUrl":null,"url":null,"abstract":"<p >Recently, nickel catalysts have garnered considerable attention for their efficacy and versatility in asymmetric catalysis, attributed to their distinctive properties. However, the use of cost-effective and sustainable divalent nickel catalysts in C–H activation/asymmetric alkene insertion poses significant challenges due to the intricate control of stereochemistry in the transformation of the tetracoordinate C–Ni(II) intermediate. Herein, we report a Ni(II)-catalyzed enantioselective C–H/N–H annulation with oxabicyclic alkenes. This protocol offers straightforward access to chiral [2,2,1]-bridged bicyclic compounds bearing four consecutive stereocenters with high enantioselectivity (up to 96% ee). The development of a sterically hindered chiral salicyloxazoline (Salox) ligand, TMS-Salox, is key to the success of this protocol. Mechanistic investigations unveiled that a chiral Ni(III)-metalacyclic intermediate was formed through the in situ oxidation of achiral organometallic Ni(II) species and coordination of the Salox ligand. This process led to the creation of a tailored chiral pocket that guides the approach of alkenes, thereby influencing and determining the stereochemistry.</p><p >Ni(II)-catalyzed enantioselective C−H/N−H annulation with oxabicyclic alkenes using a sterically hindered chiral salicyloxazoline (Salox) ligand, TMS-Salox, was reported.</p>","PeriodicalId":10,"journal":{"name":"ACS Central Science","volume":"11 1","pages":"127–135 127–135"},"PeriodicalIF":12.7000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acscentsci.4c02049","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Central Science","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acscentsci.4c02049","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Recently, nickel catalysts have garnered considerable attention for their efficacy and versatility in asymmetric catalysis, attributed to their distinctive properties. However, the use of cost-effective and sustainable divalent nickel catalysts in C–H activation/asymmetric alkene insertion poses significant challenges due to the intricate control of stereochemistry in the transformation of the tetracoordinate C–Ni(II) intermediate. Herein, we report a Ni(II)-catalyzed enantioselective C–H/N–H annulation with oxabicyclic alkenes. This protocol offers straightforward access to chiral [2,2,1]-bridged bicyclic compounds bearing four consecutive stereocenters with high enantioselectivity (up to 96% ee). The development of a sterically hindered chiral salicyloxazoline (Salox) ligand, TMS-Salox, is key to the success of this protocol. Mechanistic investigations unveiled that a chiral Ni(III)-metalacyclic intermediate was formed through the in situ oxidation of achiral organometallic Ni(II) species and coordination of the Salox ligand. This process led to the creation of a tailored chiral pocket that guides the approach of alkenes, thereby influencing and determining the stereochemistry.

Ni(II)-catalyzed enantioselective C−H/N−H annulation with oxabicyclic alkenes using a sterically hindered chiral salicyloxazoline (Salox) ligand, TMS-Salox, was reported.

求助全文
约1分钟内获得全文 求助全文
来源期刊
ACS Central Science
ACS Central Science Chemical Engineering-General Chemical Engineering
CiteScore
25.50
自引率
0.50%
发文量
194
审稿时长
10 weeks
期刊介绍: ACS Central Science publishes significant primary reports on research in chemistry and allied fields where chemical approaches are pivotal. As the first fully open-access journal by the American Chemical Society, it covers compelling and important contributions to the broad chemistry and scientific community. "Central science," a term popularized nearly 40 years ago, emphasizes chemistry's central role in connecting physical and life sciences, and fundamental sciences with applied disciplines like medicine and engineering. The journal focuses on exceptional quality articles, addressing advances in fundamental chemistry and interdisciplinary research.
×
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