检索结果-南通市图书馆

Controllable Construction of Vinyl Sulfones and β-Keto Selenosulfones via Selective Oxidative sulfonylation of Alkenes

引用

Chinese Journal of Chemistry 2024年第12期42卷 1367-1372页

作者： Xiang Liu Yuan Zhang Yi Zheng Changfeng Huang Hua Cao School of Chemistry and Chemical Engineering Guangdong Pharmaceutical UniversityZhongshanGuangdong 528458China

Comprehensive Summary The selective oxidative sulfonylation of alkenes with selenium sulfonate depended on the reaction conditions.The electrochemical C—H sulfonylation proceeded smoothly to afford(E)-vinyl sulfones with good selectivity in an undivided cell without external oxidant.While aerobic trifunctionalization of alkenes occurred in the presence of KI in the air,which providesβ-keto selenosulfones via the formation of C—O,C—S,and C—Se bonds in one-pot.Following control experiments,a plausible mechanism is proposed to rationalize the experimental results.

关键词： Synthetic methods Alkenes Difunctionalization Selenylation sulfonylation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Visible-light-irradiated tandem sulfonylation/cyclization of indole tethered alkenes for the synthesis of tetrahydrocarbazoles

引用

Chinese Chemical Letters 2022年第11期33卷 4886-4890页

作者： Yingjie Yu Aiyao Liu Jingrui He Chengting Wang Haibo Mei Jianlin Han Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China

A visible-light-mediated reaction of indole derivatives employing arylsulfonyl chlorides as sulfonyl surrogates has been developed,which proceeds via the sequence of reduction of sulfonyl chloride,sulfonylation,and intramolecular cyclization.This mild protocol transforms a diverse array of indole tethered alkenes and simple sulfonyl chlorides into highly valuable functionalized tetrahydrocarbazoles in good yields.This reaction is also suitable for gram-scale synthesis,which provides an efficient and green access to multi-substituted tetrahydrocarbazoles.

关键词： Visible-light-irradiation sulfonylation Tetrahydrocarbazoles Indoles Tandem radical reaction Sulfonyl chlorides

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于烯酰胺自由基串联环化反应合成多取代吡啶衍生物

基于烯酰胺自由基串联环化反应合成多取代吡啶衍生物

引用

作者：陈森烟台大学

学位级别：硕士

该论文围绕叔烯酰胺的串联环化反应展开一系列的探究,介绍了近年来烯酰胺参与的环化反应,充分展示了其在构建不同氮杂环方面的天然优势,探索以烯酰胺为原料合成不同官能团化吡啶的策略。烯酰胺在很多天然产物中广泛存在,其反应性与稳定... 详细信息

该论文围绕叔烯酰胺的串联环化反应展开一系列的探究,介绍了近年来烯酰胺参与的环化反应,充分展示了其在构建不同氮杂环方面的天然优势,探索以烯酰胺为原料合成不同官能团化吡啶的策略。烯酰胺在很多天然产物中广泛存在,其反应性与稳定性形成了一个良好的动态平衡,对此很多研究团队发展了多种合成烯酰胺的方法,为不同烯酰胺的构建提供了丰富的合成策略。烯酰胺作为重要的有机合成子,其环化反应是构建氮杂环化合物的重要策略。相较于传统合成吡啶,在该论文中我们以烯酰胺为原料通过双官能化,在合成吡啶的同时引入了其他的官能团。并在该论文中针对烯酰胺为原料合成磺酰化与膦酰化吡啶展开详细探究。首先我们尝试在醋酸锰催化下,二苯基氧膦产生自由基与烯酰胺通过串联环化反应构建膦酰化多取代吡啶衍生物。该方案操作简单,可对烯酰胺中多个位点进行修饰,以中等到良好的产率得到多种不同官能团取代的膦酰化吡啶。之后又在醋酸锰促进下烯酰胺与芳基亚磺酸钠发生自由基串联环化反应,合成一系列磺酰化吡啶与二氢吡啶化合物。通过改变反应介质与温度,分别得到磺酰化吡啶或二氢吡啶产物。该方案具有反应条件简单,底物普适性好和产率优异等特点。之后还尝试使用磺酰基硒苯这种绿色高效的磺酰基源,在可见光照射下烯酰胺与磺酰基硒苯串联环化合成磺酰化吡啶与二氢吡啶。该方法在无光催化剂的条件下使用磺酰基硒苯作为磺酰基源,仅改变反应的气体氛围与溶剂,即可在室温条件下获得两种不同的磺酰化吡啶衍生物。

关键词： Enamide Pyridine Dihydropyridine sulfonylation Phosphorylation

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

TsCl-promoted sulfonylation of quinoline N-oxides with sodium sulfinates in water

引用

Chinese Chemical Letters 2019年第12期30卷 2287-2290页

作者： Sha Peng Yan-Xi Song Jun-Yi He Shan-Shan Tang Jia-Xi Tan Zhong Cao Ying-Wu Lin Wei-Min He Department of Chemistry Hunan University of Science and EngineeringYongzhou 425100China Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114China School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

An eco-friendly protocol for the synthesis of various 2-sulfonyl quinolines/pyridines through sulfonylation of heteroaromatic N-oxides with sodium sulfinates in water at ambient temperature under metal-and oxidant-free conditions has been developed.The mild reaction conditions,high reaction efficiency,operational simplicity,short reaction time and remarkable functional-group compatibility make the developed protocol very attractive for the preparation of 2-sulfonyl N-heteroaromatic compounds.

关键词： Quinoline N-oxides 2-Sulfonylquinolines Sodium sulfinates sulfonylation In water

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An Efficient Method for sulfonylation of Amines, Alcohols and Phenols with N-Fluorobenzenesulfonimide Under Mild Conditions

引用

Chemical Research in Chinese Universities 2018年第2期34卷 191-196页

作者： JING Li YU Xinling GUAN Mei WU Xiaohua WANG Qiantao WU Yong Key Laboratory of Drug-targeting of Education Ministry Department of Medicinal Chemistry West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China West China Hospital Sichuan University Chengdu 610041 P. R. China

A new and convenient procedure was developed for the preparation of sulfonamides and sulfonic esters using N-fluorobenzenesulfonimide（NFSI） as a novel phenylsulfonyl group transfer reagent. In this protocol, a broad range of functional groups were tolerated to give the corresponding sulfonamides or sulfonic esters in moderate to excellent yields. The synthetic strategy for sulfonamides formation proceeded efficiently even under base-, metal- and additive-free conditions with the advantages of operational simplicity, mild reaction conditions as well as short reaction time.

关键词： N-Fluorobenzenesulfonimide sulfonylation Sulfonamide Sulfonic ester

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent advances in the application of sulfinic acids for the construction of sulfur-containing compounds

引用

Chinese Chemical Letters 2022年第1期33卷 97-114页

作者： Yufen Lv Huanhuan Cui Na Meng Huilan Yue Wei Wei School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyXining 810008China School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832000China

Sulfur-containing organic compounds display wide applications in the field of materials science,synthetic chemistry,and pharmaceutical industry.Thus,numerous synthetic strategies have been developed for the synthesis of sulfur-containing compounds in synthetic chemistry.In recent years,the utilization of sulfinic acids as versatile synthons has emerged as attractive and powerful approach to access various organosulfur compounds through sulfonylation,sulfinylation or sulfenylation reactions.In this review,we summarized the recent progress in the construction of various sulfur-containing compounds from sulfininc acids.Selected examples of substrates and the related reaction mechanisms are described here.This review intends to provide readers a comprehensive understanding on the synthesis of sulfur-containing molecules from sulfinic acids and provide help for future synthetic research.

关键词： Sulfur-containing compounds Sulfinic acids sulfonylation Sulfinylation Sulfenylation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cu-catalyzed Radical Addition Initiated Decarboxylative Functionalization

Cu-catalyzed Radical Addition Initiated Decarboxylative Func...

引用

中国化学会·第十六届全国有机合成化学学术研讨会

作者： Guixia Liu Qiu Wang 王成明 College of Chemistry and Materials Science Jinan University Department of Chemistry Duke University 暨南大学

Carboxylic acids are pervasive in nature.They are low cost,stable and easy to handle.As a result,carboxylic acids are considered as ideal substrates for organic synthesis. In the past decades,transition-metal-catalyzed decarboxylative cross-coupling reactions have enjoyed tremendous advances owing to their widespread applications to the rapid assembly of diversified complex molecular structures,particularly in the fields of medicinal chemistry and material sciences. Herein,we disclosed a copper-catalyzed radical addition initiated sp-decarboxylative functionalization:alkylation,amination and sulfonylation.

关键词： copper radical addition decarboxylation Amination Alkylation sulfonylation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：