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Organocatalytic regio- and enantioselective formal [4+2]-annulation of chiral nitrogen-containing dipoles 手性含氮偶极子的有机催化区域和对映选择性形式[4+2]环
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.44
Tao Wang, Boming Shen, Xuling Chen, Qianran Wan, Peiyuan Yu, Pengfei Li
{"title":"Organocatalytic regio- and enantioselective formal [4+2]-annulation of chiral nitrogen-containing dipoles","authors":"Tao Wang, Boming Shen, Xuling Chen, Qianran Wan, Peiyuan Yu, Pengfei Li","doi":"10.20517/cs.2022.44","DOIUrl":"https://doi.org/10.20517/cs.2022.44","url":null,"abstract":"Quinidine-catalyzed regio- and enantioselective formal [4 + 2]-cycloadditions of 2-(4H-benzo[d][1,3]oxazin-4-yl)acrylates with N-tosyl-2-methylenebut-3-enoates and 2-methylene-3-oxoalkanoates have been developed for the first time. The reaction features the in situ formation of chiral nitrogen-containing dipolar intermediates, a ring-opening/Michael addition/annulation cascade reaction and works well over a broad substrate scope to furnish the tetrahydroquinolines in high yields with high asymmetric induction under mild conditions.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128908924","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: 1
Trapezohedral platinum nanocrystals with high-index facets for high-performance hydrazine electrooxidation 具有高折射率面的四面体铂纳米晶体用于高效肼电氧化
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.32
Shenglan Hu, Na Tian, Mengpei Li, Chi Xiao, Yaoding Lou, Zhiyou Zhou, Shigang Sun
{"title":"Trapezohedral platinum nanocrystals with high-index facets for high-performance hydrazine electrooxidation","authors":"Shenglan Hu, Na Tian, Mengpei Li, Chi Xiao, Yaoding Lou, Zhiyou Zhou, Shigang Sun","doi":"10.20517/cs.2022.32","DOIUrl":"https://doi.org/10.20517/cs.2022.32","url":null,"abstract":"Direct hydrazine fuel cell is a promising portable energy conversion device due to its high energy density and free of carbon emissions. To realize the practical applications, the design of highly efficient electrocatalysts for hydrazine oxidation reaction (HzOR) is crucial. Metal nanocrystals with high-index facets have abundant step sites with reactivity. In this study, we prepared trapezohedral Pt nanocrystals (TPH Pt NCs) enclosed by {311} high-index facets and investigated the catalytic performance for hydrazine oxidation. TPH Pt NCs possess a specific activity of 39.1 mA·cm-2 at 0.20 V, much higher than {111}-faceted octahedral (13.9 mA·cm-2) and {100}-faceted cubic Pt NCs (9.11 mA·cm-2). Meanwhile, TPH Pt NCs also show superior stability. Density functional theory (DFT) calculation indicates that Pt(311) facilitates the deprotonation of N2H4* to N2H3* (the rate-determining step) and improves the HzOR activity. This study is helpful for the design of advanced electrocatalysts for HzOR, especially high-index faceted Pt nanocatalysts.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127977526","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: 1
Recent advances in nonmetallic modulation of palladium-based electrocatalysts 钯基电催化剂非金属调制研究进展
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.34
Cai-Ming Wang, Xian Jiang, Yufei Wang, Yawen Tang, Juan Zhou, G. Fu
{"title":"Recent advances in nonmetallic modulation of palladium-based electrocatalysts","authors":"Cai-Ming Wang, Xian Jiang, Yufei Wang, Yawen Tang, Juan Zhou, G. Fu","doi":"10.20517/cs.2022.34","DOIUrl":"https://doi.org/10.20517/cs.2022.34","url":null,"abstract":"Modulating the electrocatalytic performance of Palladium (Pd) with nonmetallic elements (e.g., H, B, C, N, O, P and S) has gained ever-increasing attention since their introduction has been proven to effectively modulate the 3d-electronic configuration and subsurface properties of Pd. In this review, the most advanced nonmetal-modified Pd-based catalysts are classified according to the different doped atoms (i.e., hydrides, borides, carbides, nitrides, oxides, phosphides and sulfides) and critically reviewed to emphasize the roles of nonmetallic elements doping on various electrocatalytic reactions. In each section, the synthetic strategies developed to incorporate nonmetals are discussed in detail. Furthermore, the optimized approaches of nonmetals-doped Pd-based catalysts and corresponding electrocatalytic enhancement mechanisms were also discussed clearly. Finally, the current challenges and future perspectives regarding nonmetal-modified Pd-based nanocatalysts are also outlined.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133100529","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: 6
Nanostructured intermetallics: from rational synthesis to energy electrocatalysis 纳米结构金属间化合物:从理性合成到能量电催化
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2023.17
Mingcheng Zhang, Qianqian Liu, Weipei Sun, Ke Sun, Yucheng Shen, W. An, Lu Zhang, Hui Chen, Xiaoxin Zou
{"title":"Nanostructured intermetallics: from rational synthesis to energy electrocatalysis","authors":"Mingcheng Zhang, Qianqian Liu, Weipei Sun, Ke Sun, Yucheng Shen, W. An, Lu Zhang, Hui Chen, Xiaoxin Zou","doi":"10.20517/cs.2023.17","DOIUrl":"https://doi.org/10.20517/cs.2023.17","url":null,"abstract":"Intermetallics are a large family of structurally ordered alloys that combines a metal element with other metal/metalloid elements with a clearly defined stoichiometric ratio. Intermetallics possess abundant crystal structures and atomic packing motifs, giving rise to a great variety of electronic configurations and surface adsorption properties. The wide electronic and geometric diversity makes intermetallics a highly promising population for discovering advanced materials for various catalytic applications. This review presents recent advances in the reaction synthesis of intermetallic materials at the nanoscale and their energy-related electrocatalytic applications. Initially, we introduce general principles for the formation of stable intermetallic structures. Subsequently, we elaborate on common synthetic strategies of nanostructured intermetallics, such as thermal annealing, wet-chemical methods, metallothermic reduction, and template-directed synthesis. Furthermore, we discuss the wide employment of these intermetallic nanocatalysts in many different kinds of electrocatalytic applications, as well as highlight the theoretical and experimental evidence for establishing a reasonable relationship between atomic arrangement and catalytic activity. Finally, we propose some perspectives for future developments of intermetallic preparation and catalytic applications.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133200613","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: 2
Enantioselective synthesis of 3-arylindole atropisomers via organocatalytic indolization of iminoquinones 有机催化吲哚醌对映选择性合成3-芳基吲哚反二聚体
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.46
Yu-Wei Liu, Ye‐Hui Chen, Jun-Kee Cheng, S. Xiang, B. Tan
{"title":"Enantioselective synthesis of 3-arylindole atropisomers via organocatalytic indolization of iminoquinones","authors":"Yu-Wei Liu, Ye‐Hui Chen, Jun-Kee Cheng, S. Xiang, B. Tan","doi":"10.20517/cs.2022.46","DOIUrl":"https://doi.org/10.20517/cs.2022.46","url":null,"abstract":"The direct enantioselective construction of axially chiral 3-arylindole frameworks via nucleophilic addition of 2-substituted indoles to iminoquinones has been achieved with high efficiencies under mild chiral phosphoric acid (CPA) catalytic conditions. The utility of this method was demonstrated in successful scale-up syntheses without compromising the product yields and enantioselectivities. The oxidation of products yields axially chiral heteroaryl-p-quinone monoimine, which could be subjected to structural diversification via addition of nucleophiles.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130670795","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
Information, knowledge, and human learning for chemistry: the visionary contribution of Professor Alain Krief 化学的信息、知识和人类学习:Alain Krief教授的远见贡献
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.37
S. Cerri
{"title":"Information, knowledge, and human learning for chemistry: the visionary contribution of Professor Alain Krief","authors":"S. Cerri","doi":"10.20517/cs.2022.37","DOIUrl":"https://doi.org/10.20517/cs.2022.37","url":null,"abstract":"This is not a paper about the current state of chemistry but rather the author’s perspective on a strategy for the future of chemistry and other scientific and technical disciplines. This future vision is based on synergies of natural sciences and technical disciplines on one side and the science of information, i.e., informatics, on the other. It relates the author’s interactions during 2003-2023 in professional collaborations with Alain Krief, now Emeritus Professor at the University of Namur. It is argued that the scientific value of Prof. Krief’s work - particularly related to his well-known interest in “chemical knowledge transfer” - extends beyond the scientific-technical domain of chemistry to include a much broader area of natural sciences and associated technologies. Prof. Krief’s signal contribution has resulted from his profound interest in information, knowledge, and human learning, which has been at the core of our exchanges during the last 20 years.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134104525","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: 1
Recent advances in radical phosphorylation 自由基磷酸化的最新进展
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2021.14
Yuanyuan Niu, Shangdong Yang
{"title":"Recent advances in radical phosphorylation","authors":"Yuanyuan Niu, Shangdong Yang","doi":"10.20517/cs.2021.14","DOIUrl":"https://doi.org/10.20517/cs.2021.14","url":null,"abstract":"","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114251577","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: 5
Amazing circularly polarized luminescence in inorganic materials 在无机材料中惊人的圆偏振发光
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.08
B. Su
{"title":"Amazing circularly polarized luminescence in inorganic materials","authors":"B. Su","doi":"10.20517/cs.2022.08","DOIUrl":"https://doi.org/10.20517/cs.2022.08","url":null,"abstract":"© The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131690914","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: 0
Recent advances in porous adsorbent assisted atmospheric water harvesting: a review of adsorbent materials 多孔吸附剂辅助大气集水的研究进展:吸附剂材料的综述
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.40
{"title":"Recent advances in porous adsorbent assisted atmospheric water harvesting: a review of adsorbent materials","authors":"","doi":"10.20517/cs.2022.40","DOIUrl":"https://doi.org/10.20517/cs.2022.40","url":null,"abstract":"","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132430349","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
Organocatalytic Nazarov-type cyclization of 3-alkynyl-2-indolylmethanols: construction of axially chiral cyclopenta[b]indole scaffolds 3-炔基-2-吲哚甲醇的有机催化nazarov型环化:轴手性环戊[b]吲哚支架的构建
Chemical Synthesis Pub Date : 1900-01-01 DOI: 10.20517/cs.2022.42
Ping Wu, Xinwen Yan, Song-Lin Jiang, Yike Lu, W. Tan, F. Shi
{"title":"Organocatalytic Nazarov-type cyclization of 3-alkynyl-2-indolylmethanols: construction of axially chiral cyclopenta[b]indole scaffolds","authors":"Ping Wu, Xinwen Yan, Song-Lin Jiang, Yike Lu, W. Tan, F. Shi","doi":"10.20517/cs.2022.42","DOIUrl":"https://doi.org/10.20517/cs.2022.42","url":null,"abstract":"In recent years, it has become an urgent task to design new types of indole-based platform molecules for Nazarov-type cyclizations and develop organocatalytic Nazarov-type cyclizations for synthesizing indole derivatives. To fulfill this task, in this work, by changing the alkynyl terminal substituent from t-Bu to an aryl group, the reactivity of 3-alkynyl-2-indolylmethanols is modulated and the new platform molecules serve as competent substrates for Brønsted acid-catalyzed Nazarov-type cyclization. Based on this new reactivity, the first organocatalytic Nazarov-type cyclization of aryl-substituted 3-alkynyl-2-indolylmethanols with 2-naphthols is accomplished, leading to the efficient construction of a new class of axially chiral 3, 4-dihydrocyclopenta[b]indole scaffolds. This preliminary investigation of organocatalytic asymmetric Nazarov-type cyclization provides an optional strategy for the atroposelective construction of this new class of axially chiral cyclopenta[b]indole scaffolds. In addition, the first preparation of axially chiral 3, 4-dihydrocyclopenta[b]indole with optical purity is established through chiral resolution, which could serve as a complementary method to catalytic asymmetric approaches.","PeriodicalId":381136,"journal":{"name":"Chemical Synthesis","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132517475","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: 8
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