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Letters in Organic Chemistry最新文献

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Utilizing NCP@PO(OH)2 as a Core-Shell Magnetic Nano-Catalyst for the Conversion of β-Hydroxy Nitrile to α,β-Unsaturated Carboxylic Acid 利用 NCP@PO(OH)2 作为核壳磁性纳米催化剂将 β-羟基腈转化为 α,β-不饱和羧酸
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-05-30 DOI: 10.2174/0115701786307956240522081438
Farzaneh Ebrahimzadeh
{"title":"Utilizing NCP@PO(OH)2 as a Core-Shell Magnetic Nano-Catalyst for the Conversion of β-Hydroxy Nitrile to α,β-Unsaturated Carboxylic Acid","authors":"Farzaneh Ebrahimzadeh","doi":"10.2174/0115701786307956240522081438","DOIUrl":"https://doi.org/10.2174/0115701786307956240522081438","url":null,"abstract":": The synthesis of α,β-unsaturated compounds is crucial in organic chemistry, especially in drug discovery and pharmaceutical development. In this study, NCP@POCl2-x (Fe3O4@SiO2@chitosan@POCl2-x) has been introduced as a new, environmentally friendly, and highly efficient heterogeneous magnetic nanocatalyst for the synthesis of α,β-unsaturated carboxylic acids. This catalyst facilitates the in situ transformation of POCl2-x to PO(OH)2 in the presence of water, effectively converting β-hydroxy nitriles into α,β-unsaturated carboxylic acids through a specific mechanism involving water and heat. The reactions display notable regioselectivity, leading to high-purity products and quantitative yields. NCP@PO(OH)2 exhibits heterogeneity, magnetic properties, straightforward recovery, and outstanding performance, making it a valuable catalyst for efficient and selective transformations of β-hydroxy nitriles. Additionally, it can be easily separated from the mixture of reactions using external magnetic forces.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"38 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197322","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
Ultrasound-assisted Synthesis of β-(N-arylamino)Acrylates Derivatives, Key Intermediates of Biopotent Compounds 超声辅助合成生物活性化合物的关键中间体 β-(N-芳基氨基)丙烯酸酯衍生物
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-05-29 DOI: 10.2174/0115701786305078240521085708
Gabriel de Oliveira Costa, Victor Facchinetti, Gabriel Oliveira Guimarães Fernandes, Alexandra Mitidieri Bastos Mol Pimentel, Claudia Regina Brandão Gomes, James Lewis Wardell, Solange Maria Silva Veloso Wardell, Marcus Vinicius De Souza
{"title":"Ultrasound-assisted Synthesis of β-(N-arylamino)Acrylates Derivatives, Key Intermediates of Biopotent Compounds","authors":"Gabriel de Oliveira Costa, Victor Facchinetti, Gabriel Oliveira Guimarães Fernandes, Alexandra Mitidieri Bastos Mol Pimentel, Claudia Regina Brandão Gomes, James Lewis Wardell, Solange Maria Silva Veloso Wardell, Marcus Vinicius De Souza","doi":"10.2174/0115701786305078240521085708","DOIUrl":"https://doi.org/10.2174/0115701786305078240521085708","url":null,"abstract":": β-(N-arylamino)acrylates are building blocks of great industrial interest as they allow the obtention of a variety of heterocyclic substances, such as quinoline and pyridone derivatives. Therefore, the development of new methodologies for the synthesis of these substances is still of interest. In this work, fourteen β-(N-arylamino)acrylates were synthesized in a multigram scale from the reaction of mono- and di-substituted anilines with diethyl ethoxymethylenemalonate by sonochemistry (US) and the results compared to those obtained by conventional heating. The use of the US brought many benefits to these syntheses, including faster reactions and increased yields. The crystal structure of diethyl 2-(((2-chloro-5-nitrophenyl)amino)methylene)malonate is also reported.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"44 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197409","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
Corrigendum to: Review on Pyrazole Hybrids as Anti-microbial Agents Corrigendum to：吡唑杂化物作为抗微生物剂的综述
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-05-21 DOI: 10.2174/157017862107240520155030
Tanvi Goel, Naman Jain, Deepali Bansode
{"title":"Corrigendum to: Review on Pyrazole Hybrids as Anti-microbial Agents","authors":"Tanvi Goel, Naman Jain, Deepali Bansode","doi":"10.2174/157017862107240520155030","DOIUrl":"https://doi.org/10.2174/157017862107240520155030","url":null,"abstract":"Similar affiliation error appeared in the author's affiliation in the article entitled “Review on Pyrazole Hybrids as Anti-microbial Agents”, published in Letters in Organic Chemistry, 2024, 21(4), 320-332 [1]. <p> Details of the error and a correction are provided here. <p> Original: <P> Author Affiliation: <sup>1</sup>Department of Pharmaceutical Chemistry, Bharati Vidyapeeth (Deemed to be) University, Poona College of Pharmacy, Pune, India; <sup>2</sup>Department of Pharmaceutical Chemistry, Bharati Vidyapeeth (Deemed to be) University, Poona College of Pharmacy, Pune, India <p> Corrected: <p> Author Affiliation: <sup>1</sup>Department of Pharmaceutical Chemistry, Bharati Vidyapeeth (Deemed to be) University, Poona College of Pharmacy, Pune, India <p> We regret the error and apologize to readers. <p> The original article can be found online at https://www.eurekaselect.com/article/133287","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"19 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141147312","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
Thiamine Hydrochloride: A Highly Efficient Organo-Catalyst for the One-Pot Synthesis of 2, 4, 5-Triaryl Imidazole Derivatives 盐酸硫胺：一锅合成 2、4、5-三芳基咪唑衍生物的高效有机催化剂
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-05-07 DOI: 10.2174/0115701786268343240427050351
Kishor B. Phatangare, Yatin U. Gadkari, Savita B. Lomte, Simren S. Salim, Vikas N. Telvekar
{"title":"Thiamine Hydrochloride: A Highly Efficient Organo-Catalyst for the One-Pot Synthesis of 2, 4, 5-Triaryl Imidazole Derivatives","authors":"Kishor B. Phatangare, Yatin U. Gadkari, Savita B. Lomte, Simren S. Salim, Vikas N. Telvekar","doi":"10.2174/0115701786268343240427050351","DOIUrl":"https://doi.org/10.2174/0115701786268343240427050351","url":null,"abstract":": In this study, we have developed an expeditious and efficient method for the synthesis of 2,4,5–triaryl imidazole derivatives using thiamine hydrochloride as a catalyst. The one-pot, solventfree- multicomponent reaction of an aromatic/heterocyclic aldehyde with benzyl and ammonium acetate at reflux conditions leads to the formation of title compounds in extremely good yields. This protocol offers several features, such as safe, simple, atom efficient, economical, mild conditions, minimum waste, easy work-up procedures, shorter reaction time (40-45 min), catalyst recyclability, etc. The developed methodology is operationally simple and eco-friendly.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"31 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140934439","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
Gallium Sulphide (Ga2S3): Green, Reusable, and Efficient Nanocatalyst for the Synthesis of 3,3-(arylmethylene)-bis-(4-hydroxycoumarin) Under Solvent-free Condition 硫化镓（Ga2S3）：在无溶剂条件下合成 3,3-（芳基亚甲基）-双（4-羟基香豆素）的绿色、可重复使用且高效的纳米催化剂
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-30 DOI: 10.2174/0115701786303227240422140153
Amol R. Parhad, Dilip S. Aute, Anil G. Gadhave, Bhagwat K. Uphade
{"title":"Gallium Sulphide (Ga2S3): Green, Reusable, and Efficient Nanocatalyst for the Synthesis of 3,3-(arylmethylene)-bis-(4-hydroxycoumarin) Under Solvent-free Condition","authors":"Amol R. Parhad, Dilip S. Aute, Anil G. Gadhave, Bhagwat K. Uphade","doi":"10.2174/0115701786303227240422140153","DOIUrl":"https://doi.org/10.2174/0115701786303227240422140153","url":null,"abstract":":: Our current work's primary goal is to create novel heterogeneous gallium sulfide (Ga2S3) nanocatalysts and investigate their catalytic activity in the synthesis of 3,3-(arylmethylene)-bis-(4- hydroxycoumarin) derivatives without use of solvent. FT-IR, XRD, SEM, and EDX analysis characterized the synthesized gallium sulfide (Ga2S3) nanomaterial catalysts. This method's main benefits are its short reaction time, solvent-free conditions, extremely mild reaction conditions, good product yield, and, most importantly, its ability to recover catalysts after at least four runs. background: Use nanocatalyst in multicomponent reaction. objective: To enhance the catalytic activity of nanocatalyst.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"32 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140836863","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
Ligand-Free, Copper-Catalyzed Coupling Reaction of Aryl Aluminum Reagents with N-Aryl Thiosuccinimides 芳基铝试剂与 N-芳基硫代丁二酰亚胺的无配位铜催化偶联反应
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-19 DOI: 10.2174/0115701786298931240408083720
Zhihao Zhang, Xiaoying Jia, Jiaxia Pu, Lirong Han, Jinsong Hou, Qinghan Li
{"title":"Ligand-Free, Copper-Catalyzed Coupling Reaction of Aryl Aluminum Reagents with N-Aryl Thiosuccinimides","authors":"Zhihao Zhang, Xiaoying Jia, Jiaxia Pu, Lirong Han, Jinsong Hou, Qinghan Li","doi":"10.2174/0115701786298931240408083720","DOIUrl":"https://doi.org/10.2174/0115701786298931240408083720","url":null,"abstract":": A highly efficient and simple cross-coupling reaction of N-aryl aluminum reagents with Naryl thiosuccinimides for the synthesis of diarylsulide derivatives using CuCl (20 mol%) as a catalyst is reported. Under the optimum reaction conditions, the coupling reaction between aryl aluminum reagents with different substituents and N-aryl thiosuccinimides with different substituents can be carried out smoothly with 18-94% isolated yields of diarylsulides. The method avoids the use of expensive transition metals, such as Pd, Ir, or Rh, phosphine ligands, and has the advantages of simple operation and high reaction efficiency. The structures of all the target compounds are confirmed by 1 HNMR and 13CNMR.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624433","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
Iodine-Mediated Aromatization of Himachalenes: Synthesis of Dehydro-7,8-arylhimachalene 碘介导的绯红烯芳香化反应：脱氢-7,8-芳基桧烯的合成
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-17 DOI: 10.2174/0115701786297846240408070836
Louchachha Isam, Edder Youssef, Faris Abdelmajid, Brahim Boualy, Mustapha Ait Ali, Abdallah Karim
{"title":"Iodine-Mediated Aromatization of Himachalenes: Synthesis of Dehydro-7,8-arylhimachalene","authors":"Louchachha Isam, Edder Youssef, Faris Abdelmajid, Brahim Boualy, Mustapha Ait Ali, Abdallah Karim","doi":"10.2174/0115701786297846240408070836","DOIUrl":"https://doi.org/10.2174/0115701786297846240408070836","url":null,"abstract":": Dehydro-7,8-aryl-himachalene is a desired natural benzocycloheptene sesquiterpene found in the essential oil of Atlas cedar (Cedrus atlantica) in minor quantities. Herein, we report a simple and environmentally benign synthesis of this molecule via the aromatization of himachalene mixture (the major constituent of the same oil). The synthesis of the desired compound has been achieved by iodine/DMSO-mediated aromatization. The synthesized product has been characterized using MS spectrometry and NMR spectroscopy data. The treatment of the himachalene mixture with iodine led to the formation of dehydro-7,8-arylhimachalene, along with other rearrangement products catalyzed by the hydroiodic acid formed in situ. The use of DMSO as a co-solvent enabled the elimination of the acid formed and the regeneration of iodine. The optimization of the reaction conditions led to the formation of the desired product with a good yield. The present study highlights the development of a simple and environmentally benign method for the synthesis of a natural benzocycloheptene-based sesquiterpenoid in large quantities in order to explore its biological and chemical properties.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"58 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613989","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
An Insight into Common and Advanced Synthesis Methodologies of Acyl Urea Analogs Targeting the CNS 洞察以中枢神经系统为目标的酰基脲类似物的常见和高级合成方法
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-17 DOI: 10.2174/0115701786303718240409044341
Preeti Kumari, Rakhi Mishra, Rupa Mazumder, Avijit Mazumder, Ayushi Singh, Gurvinder Singh, Pankaj Kumar Tyagi
{"title":"An Insight into Common and Advanced Synthesis Methodologies of Acyl Urea Analogs Targeting the CNS","authors":"Preeti Kumari, Rakhi Mishra, Rupa Mazumder, Avijit Mazumder, Ayushi Singh, Gurvinder Singh, Pankaj Kumar Tyagi","doi":"10.2174/0115701786303718240409044341","DOIUrl":"https://doi.org/10.2174/0115701786303718240409044341","url":null,"abstract":": The acyl urea functionality and related analogs are increasingly used in medicinal chemistry and drug design to prove well-defined pharmacological actions and optimal physicochemical properties. This review paper aimed to summarize information related to synthesis methods of acyl urea derivatives, marketed products, and patents to explore their applications in counteracting CNS-related diseases by multiple targeting. Comprehensive data related to acyl urea and related compounds of the last 15 years is collected from various resources to provide enormous information to the readers. The content of the study uniformly includes considerable evidence linked to the common and unique synthesis techniques of acyl urea from starting materials like benzamide, isocyanates, substituted iodoglycals, 2 chloro nicotinic acid, and methyl hydrazines, as well as patents related to the same. This work describes the reactions of several substrates that can be used to manufacture various acyl urea derivatives. An understanding of patents related to acyl urea analogs with specific targets for CNS action may also help researchers working on additional synthesis of acyl urea derivatives with potential CNS action.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"29 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614058","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
Insight into the Novel Synthesis Approaches and Biological Activity of 1,3,4 Oxadiazole: A Review 洞察 1,3,4-噁二唑的新型合成方法和生物活性：综述
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-15 DOI: 10.2174/0115701786304096240324113413
Ayush Jain, Chandana Majee, Rupa Mazumder, Swrupanjali Padhi, Avijit Mazumder, Saumya Das, Arvind Kumar, Mvnl Chaitanya
{"title":"Insight into the Novel Synthesis Approaches and Biological Activity of 1,3,4 Oxadiazole: A Review","authors":"Ayush Jain, Chandana Majee, Rupa Mazumder, Swrupanjali Padhi, Avijit Mazumder, Saumya Das, Arvind Kumar, Mvnl Chaitanya","doi":"10.2174/0115701786304096240324113413","DOIUrl":"https://doi.org/10.2174/0115701786304096240324113413","url":null,"abstract":": Oxadiazole is an organic compound featuring a heterocyclic ring housing carbon, oxygen, and nitrogen atoms. Due to their heightened stability in biological environments, oxadiazole rings exhibit significant biological activities, effectively addressing health challenges like infectious diseases and chronic conditions in medicinal chemistry. The main objective of this review is to discuss various synthetic approaches related to 1,3,4-oxadiazole and its derivatives. The diverse reactivity positions oxadiazole as a valuable building block in organic synthesis, with derivatives exhibiting promising pharmacological activities. It involves a systematic literature review, critical analysis, and synthesis of existing research. This review comprises the ever-expanding chemical knowledge and has significant implications for drug development. Synthetic approaches to synthesizing oxadiazole through different schemes and methods have been discussed thoroughly. This review also concisely associated the pharmacological activities of oxadiazole and its derivatives. This review highlights the importance of continued research into the structure-activity relationships of oxadiazole derivatives, paving the way for developing novel and more potent therapeutic agents.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140571279","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
[Bmim][CF3COO] as a Solvent and a Catalyst for the Knoevenagel Condensation [Bmim][CF3COO]作为克诺文纳格尔缩合反应的溶剂和催化剂
IF 0.8 4区 化学
Letters in Organic Chemistry Pub Date : 2024-04-13 DOI: 10.2174/0115701786294320240311022937
Nguyen Thi Chung, Vo Cong Dung, Dau Xuan Duc
{"title":"[Bmim][CF3COO] as a Solvent and a Catalyst for the Knoevenagel Condensation","authors":"Nguyen Thi Chung, Vo Cong Dung, Dau Xuan Duc","doi":"10.2174/0115701786294320240311022937","DOIUrl":"https://doi.org/10.2174/0115701786294320240311022937","url":null,"abstract":": A facile and green strategy for the Knoevenagel condensation reaction of aryl aldehydes and active methylene compounds using [Bmim][CF3COO] ionic liquid as a solvent and a catalyst has been introduced. The method features some advantages, such as good to excellent yield of products, relatively short reaction time, mild reaction conditions, broad substrate scope, and scalability. Moreover, the ionic liquid solvent could be conveniently recycled and reused up to three times without any considerable loss of catalytic activity. Twelve products were obtained in high yields, and their structures were confirmed by NMR data. A plausible reaction mechanism involving the role of the ionic liquid catalyst was also suggested.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"50 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140571345","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
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