首页 > 最新文献

Synlett最新文献

英文 中文
Total Synthesis of Moiramide B Using an Allylic Alkylation Approach 使用烯丙基烷基化方法全合成莫伊酰胺 B
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-04-02 DOI: 10.1055/s-0042-1751578
An allylic side chain is introduced onto a chiral γ-amino-β-ketoamide by a Pd-catalyzed allylic alkylation. Subsequent ozonolysis and oxidation proceed only with Cbz-protected ketoamides. The total synthesis of moiramide B is finalized by peptide coupling.
通过钯催化的烯丙基烷基化反应,在手性 γ-氨基-β-酮酰胺上引入了烯丙基侧链。只有 Cbz 保护的酮酰胺才能进行后续的臭氧分解和氧化。最后通过肽偶联完成莫来酰胺 B 的全合成。
{"title":"Total Synthesis of Moiramide B Using an Allylic Alkylation Approach","authors":"","doi":"10.1055/s-0042-1751578","DOIUrl":"https://doi.org/10.1055/s-0042-1751578","url":null,"abstract":"An allylic side chain is introduced onto a chiral γ-amino-β-ketoamide by a Pd-catalyzed allylic alkylation. Subsequent ozonolysis and oxidation proceed only with Cbz-protected ketoamides. The total synthesis of moiramide B is finalized by peptide coupling.","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"38 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stereoselective Synthesis of Unsymmetrical 1,1-Diborylalkenes 不对称 1,1-二芳基烯的立体选择性合成
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-04-02 DOI: 10.1055/s-0042-1751580
1,1-Diborylalkene, a class of important diboryl species, serves as the synthetic precursor of multisubstituted olefin, which is a prevalent building block in natural products, functional materials, and pharmaceuticals. Current methods mainly afford symmetrical 1,1-diborylalkenes, and late-stage differentiation of the two identical boryl groups is required to achieve selective difunctionalization. In comparison, stereoselective synthesis of unsymmetrical 1,1-diborylalkenes (UDBA) are less-explored. This Synpacts article provides a brief summary of the achievements in the synthesis of UDBAs. In particularly, we highlight our recent work on the unsymmetrical 1,1-diborylation of alkynes using a neutral sp2–sp3 diboron reagent to access UDBAs and their controllable stepwise derivatization.1 Introduction2 Background: Unsymmetrical 1,1-Diborylalkene Synthesis3 Stereoselective Unsymmetrical 1,1-Diborylation of Alkynes with a Neutral sp2–sp3 Diboron Reagent4 Summary and Outlook
1,1-二硼烷烯是一类重要的二硼烷基物种,是多取代烯烃的合成前体,是天然产品、功能材料和药品中的一种常见结构单元。目前的方法主要生成对称的 1,1-二硼酸烯,需要在后期对两个相同的硼酸基进行分化,以实现选择性双官能化。相比之下,非对称 1,1-二硼烷烯 (UDBA) 的立体选择性合成研究较少。这篇 Synpacts 文章简要总结了在 UDBA 合成方面取得的成就。我们特别强调了最近在使用中性 sp2-sp3 二硼试剂对炔烃进行不对称 1,1-二乙酰化以获得 UDBAs 及其可控逐步衍生化方面所做的工作:不对称 1,1-二芳基烯合成3 利用中性 sp2-sp3 二硼试剂对炔类化合物进行立体选择性不对称 1,1-二芳基化4 总结与展望
{"title":"Stereoselective Synthesis of Unsymmetrical 1,1-Diborylalkenes","authors":"","doi":"10.1055/s-0042-1751580","DOIUrl":"https://doi.org/10.1055/s-0042-1751580","url":null,"abstract":"1,1-Diborylalkene, a class of important diboryl species, serves as the synthetic precursor of multisubstituted olefin, which is a prevalent building block in natural products, functional materials, and pharmaceuticals. Current methods mainly afford symmetrical 1,1-diborylalkenes, and late-stage differentiation of the two identical boryl groups is required to achieve selective difunctionalization. In comparison, stereoselective synthesis of unsymmetrical 1,1-diborylalkenes (UDBA) are less-explored. This Synpacts article provides a brief summary of the achievements in the synthesis of UDBAs. In particularly, we highlight our recent work on the unsymmetrical 1,1-diborylation of alkynes using a neutral sp2–sp3 diboron reagent to access UDBAs and their controllable stepwise derivatization.1 Introduction2 Background: Unsymmetrical 1,1-Diborylalkene Synthesis3 Stereoselective Unsymmetrical 1,1-Diborylation of Alkynes with a Neutral sp2–sp3 Diboron Reagent4 Summary and Outlook","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"5 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TfOH-Catalyzed Facile Access for One-Pot Synthesis of β-Acylamino Ketones by Avoiding the Usage of Acetyl Chloride 避免使用乙酰氯,在 TfOH 催化下轻松实现 β-酰氨基酮的一锅合成
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-28 DOI: 10.1055/s-0042-1751579
Sachin D. Kharat, Prasad B. Rupnavar, Keshav S. Pakhare, Ayesha A. Khan, Bapurao D. Rupanawar, Mahadev P. Shinde

We have developed a TfOH-catalyzed, highly efficient protocol for the synthesis of biologically active β-acylamino ketones from aldehyde, ketone, and nitrile by avoiding the use of acetyl chloride. The reaction proceeds through a sequential aldol reaction followed by a nucleophilic attack of nitrile and hydrolysis of nitrile in one pot. The attractive features of this tandem process are mild reaction conditions, high atom economy, broad substrate scope with 51–87% yield, gram-scale reaction, and ease of operation.

我们开发了一种在 TfOH 催化下从醛、酮和腈合成具有生物活性的 β-酰氨基酮的高效方法,避免了乙酰氯的使用。该反应通过一个连续的醛醇反应进行,然后是腈的亲核反应和腈的水解反应。这种串联工艺的诱人之处在于反应条件温和、原子经济性高、底物范围广(产率为 51-87%)、反应规模为克级以及操作简便。
{"title":"TfOH-Catalyzed Facile Access for One-Pot Synthesis of β-Acylamino Ketones by Avoiding the Usage of Acetyl Chloride","authors":"Sachin D. Kharat, Prasad B. Rupnavar, Keshav S. Pakhare, Ayesha A. Khan, Bapurao D. Rupanawar, Mahadev P. Shinde","doi":"10.1055/s-0042-1751579","DOIUrl":"https://doi.org/10.1055/s-0042-1751579","url":null,"abstract":"<p>We have developed a TfOH-catalyzed, highly efficient protocol for the synthesis of biologically active β-acylamino ketones from aldehyde, ketone, and nitrile by avoiding the use of acetyl chloride. The reaction proceeds through a sequential aldol reaction followed by a nucleophilic attack of nitrile and hydrolysis of nitrile in one pot. The attractive features of this tandem process are mild reaction conditions, high atom economy, broad substrate scope with 51–87% yield, gram-scale reaction, and ease of operation.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"6 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140324592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical Efficient Synthesis of Two Azo Energetic Compounds 电化学高效合成两种偶氮能化合物
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-27 DOI: 10.1055/a-2283-5829
Jinhao Zhang, Yulan Song, Wenjia Hao, Rufang Peng, Bo Jin

Azo compounds with a high density, high enthalpy, and excellent detonation performance have received increasing research attention. The conventional method of chemical dehydrogenation that is used to form azo compounds involves the use of strong oxidants, resulting in environmental pollution. Electrochemical organic synthesis is considered an old method and a new technology. In this work, azofurazan tetrazole {H2AzFT; 5,5′-[diazene-1,2-diylbis(1,2,5-oxadiazole-4,3-diyl)]bis-1H-tetrazole} and azofurazan hydroxytetrazole (H2AzFTO) were synthesized by a green and efficient electrochemical dehydrogenation coupling of 5-(4-aminofurazan-3-yl)-1H-tetrazole and 5-(4-aminofurazan-3-yl)-1-hydroxytetrazole, respectively. The structures of H2AzFT and (NH4)2AzFTO were fully characterized by infrared spectroscopy, nuclear magnetic resonance, and elemental analysis, and their thermal stabilities were determined by differential thermal analysis.

具有高密度、高热值和优异引爆性能的偶氮化合物受到越来越多的研究关注。传统的化学脱氢法生成偶氮化合物需要使用强氧化剂,造成环境污染。电化学有机合成被认为是一种古老的方法和新技术。在这项工作中,偶氮呋咱四氮唑 {H2AzFT;5,5′-[重氮-1,2-二基双(1,2,5-恶二唑-4,3-二基)]双-1H-四氮唑}和偶氮呋咱羟基四氮唑(H2AzFTO)分别通过 5-(4-氨基呋咱-3-基)-1H-四氮唑和 5-(4-氨基呋咱-3-基)-1-羟基四氮唑的绿色高效电化学脱氢偶联合成。通过红外光谱、核磁共振和元素分析对 H2AzFT 和 (NH4)2AzFTO 的结构进行了全面表征,并通过差热分析确定了它们的热稳定性。
{"title":"Electrochemical Efficient Synthesis of Two Azo Energetic Compounds","authors":"Jinhao Zhang, Yulan Song, Wenjia Hao, Rufang Peng, Bo Jin","doi":"10.1055/a-2283-5829","DOIUrl":"https://doi.org/10.1055/a-2283-5829","url":null,"abstract":"<p>Azo compounds with a high density, high enthalpy, and excellent detonation performance have received increasing research attention. The conventional method of chemical dehydrogenation that is used to form azo compounds involves the use of strong oxidants, resulting in environmental pollution. Electrochemical organic synthesis is considered an old method and a new technology. In this work, azofurazan tetrazole {H<sub>2</sub>AzFT; 5,5′-[diazene-1,2-diylbis(1,2,5-oxadiazole-4,3-diyl)]bis-1<i>H</i>-tetrazole} and azofurazan hydroxytetrazole (H<sub>2</sub>AzFTO) were synthesized by a green and efficient electrochemical dehydrogenation coupling of 5-(4-aminofurazan-3-yl)-1<i>H</i>-tetrazole and 5-(4-aminofurazan-3-yl)-1-hydroxytetrazole, respectively. The structures of H<sub>2</sub>AzFT and (NH<sub>4</sub>)<sub>2</sub>AzFTO were fully characterized by infrared spectroscopy, nuclear magnetic resonance, and elemental analysis, and their thermal stabilities were determined by differential thermal analysis.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"14 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Late-Stage C–H Deuteration of Organic Compounds via Ligand-Enabled Palladium-Catalyzed Hydrogen Isotope Exchange 通过配体催化的钯催化氢同位素交换实现有机化合物的后期 C-H Deuteration
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-22 DOI: 10.1055/s-0042-1751566
Jyotirmoy Dey, Manuel van Gemmeren

Over the past years our lab has established a research program towards the late-stage introduction of deuterium into organic molecules using Pd-catalyzed reversible C–H activation as a means to affect hydrogen isotope exchange. Through catalyst design, including the introduction of novel ligand scaffolds, as well as the use of strategically chosen optimization and screening approaches, e.g., exploiting microscopic reversibility by first optimizing de-deuteration processes or using a multi-substrate screening approach, our studies have resulted in a number of synthetically useful labelling protocols and are described herein from a personal perspective.

1 Introduction

2 β-C(sp3)–H Deuteration of Free Carboxylic Acids

3 Nondirected C–H Deuteration of Arenes

4 Nondirected C–H Deuteration of Heteroarenes

5 Conclusion

在过去几年中,我们实验室建立了一项研究计划,利用钯催化的可逆 C-H 活化作为影响氢同位素交换的手段,将氘引入有机分子的后期阶段。通过催化剂设计,包括引入新型配体支架,以及使用战略性选择的优化和筛选方法(例如,通过首先优化脱氘过程或使用多底物筛选方法来利用微观可逆性),我们的研究已经产生了许多在合成上有用的标记方案,本文将从个人角度对这些方案进行描述。1 引言 2 游离羧酸的 β-C(sp3)-H 去氘代反应 3 烯的非定向 C-H 去氘代反应 4 异戊二烯的非定向 C-H 去氘代反应 5 结论
{"title":"Late-Stage C–H Deuteration of Organic Compounds via Ligand-Enabled Palladium-Catalyzed Hydrogen Isotope Exchange","authors":"Jyotirmoy Dey, Manuel van Gemmeren","doi":"10.1055/s-0042-1751566","DOIUrl":"https://doi.org/10.1055/s-0042-1751566","url":null,"abstract":"<p>Over the past years our lab has established a research program towards the late-stage introduction of deuterium into organic molecules using Pd-catalyzed reversible C–H activation as a means to affect hydrogen isotope exchange. Through catalyst design, including the introduction of novel ligand scaffolds, as well as the use of strategically chosen optimization and screening approaches, e.g., exploiting microscopic reversibility by first optimizing de-deuteration processes or using a multi-substrate screening approach, our studies have resulted in a number of synthetically useful labelling protocols and are described herein from a personal perspective.</p> <p>1 Introduction</p> <p>2 β-C(sp<sup>3</sup>)–H Deuteration of Free Carboxylic Acids</p> <p>3 Nondirected C–H Deuteration of Arenes</p> <p>4 Nondirected C–H Deuteration of Heteroarenes</p> <p>5 Conclusion</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"30 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Difunctionalization of Alkenes Completed by DMTSM and CF3SO2Na without Metal Catalysts DMTSM 和 CF3SO2Na 在不使用金属催化剂的情况下完成的烯烃双官能化反应
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-22 DOI: 10.1055/a-2283-5928
Siwei Shen, Jinzhao Gao, Xiaofeng Luo, Tianqiang Wang, Peihua Liu, Rulong Yan

The electrophilic thiolation of alkenes initiated by DMTSM and the addition of CF3SO2Na in one pot has been developed. This reaction also can be extended to ArSO2Na. This protocol features a good substrate scope, simple procedures, and mild reaction conditions and affords the desired products in moderate yields without metal catalysts.

通过 DMTSM 和 CF3SO2Na 的一锅加成,开发出了烯烃的亲电硫代反应。该反应还可扩展至 ArSO2Na。该方案具有底物范围广、操作简单、反应条件温和等特点,无需金属催化剂就能以中等产率得到所需的产物。
{"title":"The Difunctionalization of Alkenes Completed by DMTSM and CF3SO2Na without Metal Catalysts","authors":"Siwei Shen, Jinzhao Gao, Xiaofeng Luo, Tianqiang Wang, Peihua Liu, Rulong Yan","doi":"10.1055/a-2283-5928","DOIUrl":"https://doi.org/10.1055/a-2283-5928","url":null,"abstract":"<p>The electrophilic thiolation of alkenes initiated by DMTSM and the addition of CF<sub>3</sub>SO<sub>2</sub>Na in one pot has been developed. This reaction also can be extended to ArSO<sub>2</sub>Na. This protocol features a good substrate scope, simple procedures, and mild reaction conditions and affords the desired products in moderate yields without metal catalysts.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"144 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Simple Tool to Benchmark Reactivity in Asymmetric Catalysis 不对称催化反应基准的简单工具
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-21 DOI: 10.1055/s-0042-1751576
Alberto Muñoz, Tomislav Rovis

Herein, we report a simple and noninvasive experimental protocol in which a series of relative reaction rates may be obtained by way of single competition experiments. This approach permits a quantitative comparison of any given number of chiral catalysts relative to a ‘benchmarking’ chiral catalyst – a particularly useful tool since catalyst design and selection have remained largely dependent on chemical intuition. We apply this benchmarking approach towards an asymmetric N-heterocyclic carbene (NHC) catalyzed intramolecular Stetter reaction as a proof-of-concept study. In doing so, we demonstrate a rapid method to assess the complex interplay between catalyst reactivity and stereoelectronic effects – an analytical approach that has heretofore not been attempted for NHCs. To showcase the generality of this method, we apply it to an enantioselective Rh(I)-catalyzed [2+2+2] cycloaddition of alkenyl isocyanates and aryl alkynes for a series of chiral phosphoramidite ligands. The results described herein demonstrate that this inexpensive and easily adoptable protocol can reveal complex yet subtle steric and stereoelectronic effects of vastly different chiral catalyst structures, which can further aid with catalyst development and selection for a clearly defined application.

在此,我们报告了一种简单、非侵入性的实验方案,通过该方案,可以通过单次竞争实验获得一系列相对反应速率。由于催化剂的设计和选择在很大程度上仍然依赖于化学直觉,因此这种方法可以将任意给定数量的手性催化剂与 "基准 "手性催化剂进行定量比较,是一种特别有用的工具。作为概念验证研究,我们将这种基准方法应用于不对称 N-杂环碳烯 (NHC) 催化的分子内斯泰特反应。在此过程中,我们展示了一种快速评估催化剂反应性和立体电子效应之间复杂相互作用的方法--这是一种迄今为止尚未尝试过的 NHC 分析方法。为了展示这种方法的通用性,我们将其应用于一系列手性磷酰胺配体的对映体选择性 Rh(I)- 催化异氰酸烯酯和芳基炔的 [2+2+2] 环加成反应。本文所描述的结果表明,这种成本低廉、易于采用的方案可以揭示差异巨大的手性催化剂结构的复杂而微妙的立体和立体电子效应,从而进一步帮助催化剂的开发和选择,以实现明确的应用。
{"title":"A Simple Tool to Benchmark Reactivity in Asymmetric Catalysis","authors":"Alberto Muñoz, Tomislav Rovis","doi":"10.1055/s-0042-1751576","DOIUrl":"https://doi.org/10.1055/s-0042-1751576","url":null,"abstract":"<p>Herein, we report a simple and noninvasive experimental protocol in which a series of relative reaction rates may be obtained by way of single competition experiments. This approach permits a quantitative comparison of any given number of chiral catalysts relative to a ‘benchmarking’ chiral catalyst – a particularly useful tool since catalyst design and selection have remained largely dependent on chemical intuition. We apply this benchmarking approach towards an asymmetric <i>N</i>-heterocyclic carbene (NHC) catalyzed intramolecular Stetter reaction as a proof-of-concept study. In doing so, we demonstrate a rapid method to assess the complex interplay between catalyst reactivity and stereoelectronic effects – an analytical approach that has heretofore not been attempted for NHCs. To showcase the generality of this method, we apply it to an enantioselective Rh(I)-catalyzed [2+2+2] cycloaddition of alkenyl isocyanates and aryl alkynes for a series of chiral phosphoramidite ligands. The results described herein demonstrate that this inexpensive and easily adoptable protocol can reveal complex yet subtle steric and stereoelectronic effects of vastly different chiral catalyst structures, which can further aid with catalyst development and selection for a clearly defined application.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"144 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rhodium-Catalyzed Decarbonylative Intramolecular Arylation of 2-(1H-Indole-1-carbonyl)benzoic Acids 铑催化的 2-(1H-吲哚-1-羰基)苯甲酸分子内脱羰基芳基化反应
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-20 DOI: 10.1055/a-2278-5797
Hirotsugu Suzuki, Yosuke Takemura, Takanori Matsuda

We developed a redox-neutral synthesis of isoindoloindolone via intramolecular arylation of 2-(1H-indole-1-carbonyl)benzoic acids. This protocol facilitates the formation of various substituted isoindoloindolones in yields ranging from 17% to 80%. Our mechanistic investigations indicate the pivotal role of NaI: the iodide anion promotes the formation of the desired isoindoloindolone, and the sodium cation suppresses the formation of acylated byproducts, thereby enabling the selective formation of isoindoloindolones in acceptable yields.

我们通过 2-(1H-吲哚-1-羰基)苯甲酸的分子内芳基化,开发了一种氧化还原中性合成异吲哚吲哚酮的方法。该方法有助于生成各种取代的异吲哚吲哚酮,产率从 17% 到 80%不等。我们的机理研究表明了 NaI 的关键作用:碘化阴离子促进了所需异吲哚啉酮的形成,而钠离子则抑制了酰化副产物的形成,从而使异吲哚啉酮能够以可接受的产率选择性地形成。
{"title":"Rhodium-Catalyzed Decarbonylative Intramolecular Arylation of 2-(1H-Indole-1-carbonyl)benzoic Acids","authors":"Hirotsugu Suzuki, Yosuke Takemura, Takanori Matsuda","doi":"10.1055/a-2278-5797","DOIUrl":"https://doi.org/10.1055/a-2278-5797","url":null,"abstract":"<p>We developed a redox-neutral synthesis of isoindoloindolone via intramolecular arylation of 2-(1<i>H</i>-indole-1-carbonyl)benzoic acids. This protocol facilitates the formation of various substituted isoindoloindolones in yields ranging from 17% to 80%. Our mechanistic investigations indicate the pivotal role of NaI: the iodide anion promotes the formation of the desired isoindoloindolone, and the sodium cation suppresses the formation of acylated byproducts, thereby enabling the selective formation of isoindoloindolones in acceptable yields.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Electrochemical trans-Chloroformyloxylation of Unactivated Alkenes 未活化烯烃的电化学反式氯甲酰氧基化反应
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-20 DOI: 10.1055/s-0043-1763695
Jona Queder, Gerhard Hilt

An attempted aryl selenium-catalyzed formation of cis-chlorohydrins from alkenes was unsuccessful but led to an electrochemical investigation for the trans-selective chloroformyloxylation of cyclic and acyclic alkenes in moderate to good yields. Interestingly, when 1,1-disubstituted alkenes were used, the corresponding vinyl chloride derivatives were obtained, and the application of 1-phenylcyclohex-1-ene led to the formation of an allyl chloride derivative.

有人尝试用芳基硒催化烯烃形成顺式氯海德林,但没有成功,但却促成了一项电化学研究,即环烯和无环烯的反选择性氯甲酰氧基化反应,收率从中等到良好不等。有趣的是,当使用 1,1-二取代烯烃时,可得到相应的氯乙烯衍生物,而使用 1-苯基环己-1-烯可生成烯丙基氯衍生物。
{"title":"The Electrochemical trans-Chloroformyloxylation of Unactivated Alkenes","authors":"Jona Queder, Gerhard Hilt","doi":"10.1055/s-0043-1763695","DOIUrl":"https://doi.org/10.1055/s-0043-1763695","url":null,"abstract":"<p>An attempted aryl selenium-catalyzed formation of <i>cis</i>-chlorohydrins from alkenes was unsuccessful but led to an electrochemical investigation for the <i>trans</i>-selective chloroformyloxylation of cyclic and acyclic alkenes in moderate to good yields. Interestingly, when 1,1-disubstituted alkenes were used, the corresponding vinyl chloride derivatives were obtained, and the application of 1-phenylcyclohex-1-ene led to the formation of an allyl chloride derivative.</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"102 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bioorthogonal Chemistry at Radboud University: Past, Present and Future 拉德布德大学的生物正交化学:过去、现在和未来
IF 2 4区 化学 Q3 CHEMISTRY, ORGANIC Pub Date : 2024-03-14 DOI: 10.1055/s-0042-1751569
Floris P. J. T. Rutjes, Kimberly M. Bonger, Kevin Neumann

Over the past two decades, bioorthogonal chemistry has profoundly impacted various chemistry-related fields, including chemical biology and drug delivery. This transformative progress stems from collaborative efforts involving chemists and biologists, underscoring the importance of interdisciplinary research. In this Account, we present the developments in bioorthogonal chemistry within our Institute for Molecules and Materials at Radboud University. The chemistry disclosed here spans from strained alkynes and alkenes to drug release and bioconjugation strategies, mirroring the extensive scope provided by bioorthogonal chemistry. By reflecting on the chemistry originating at Radboud University, this Account emphasizes that teamwork is essential for driving significant progress in bioorthogonal chemistry.

1 Introduction

2 Providing BCN as a Robust Bioorthogonal Tool for Chemical Biology and Beyond

3 Towards Readily Available Click-to-Release trans-Cyclooctenes

4 Giving Molecules Guidance

5 Next Generation of Bioconjugation Strategies: Dynamic Click Chemistry

6 Conclusions

过去二十年来,生物正交化学对化学生物学和药物输送等多个化学相关领域产生了深远影响。这一变革性进展源于化学家和生物学家的通力合作,凸显了跨学科研究的重要性。在本报告中,我们将介绍拉德布德大学分子与材料研究所在生物正交化学方面的发展。本报告所介绍的化学领域涵盖了从应变炔烃和烯烃到药物释放和生物结合策略,反映了生物正交化学所提供的广泛范围。通过反思源自拉德布德大学的化学,本报告强调团队合作对于推动生物正交化学取得重大进展至关重要。1 引言 2 将 BCN 作为化学生物学及其他领域的强大生物正交工具 3 实现随时可用的点击释放反式环辛烯 4 为分子提供指导 5 下一代生物共轭策略:动态点击化学 6 结论
{"title":"Bioorthogonal Chemistry at Radboud University: Past, Present and Future","authors":"Floris P. J. T. Rutjes, Kimberly M. Bonger, Kevin Neumann","doi":"10.1055/s-0042-1751569","DOIUrl":"https://doi.org/10.1055/s-0042-1751569","url":null,"abstract":"<p>Over the past two decades, bioorthogonal chemistry has profoundly impacted various chemistry-related fields, including chemical biology and drug delivery. This transformative progress stems from collaborative efforts involving chemists and biologists, underscoring the importance of interdisciplinary research. In this Account, we present the developments in bioorthogonal chemistry within our Institute for Molecules and Materials at Radboud University. The chemistry disclosed here spans from strained alkynes and alkenes to drug release and bioconjugation strategies, mirroring the extensive scope provided by bioorthogonal chemistry. By reflecting on the chemistry originating at Radboud University, this Account emphasizes that teamwork is essential for driving significant progress in bioorthogonal chemistry.</p> <p>1 Introduction</p> <p>2 Providing BCN as a Robust Bioorthogonal Tool for Chemical Biology and Beyond</p> <p>3 Towards Readily Available Click-to-Release <i>trans</i>-Cyclooctenes</p> <p>4 Giving Molecules Guidance</p> <p>5 Next Generation of Bioconjugation Strategies: Dynamic Click Chemistry</p> <p>6 Conclusions</p> ","PeriodicalId":22319,"journal":{"name":"Synlett","volume":"57 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140152795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Synlett
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
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
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1