Thematische Bibliographien / Green Synthesis of Nitrogen Containing Heterocyclic Compounds

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Auswahl der wissenschaftlichen Literatur zum Thema „Green Synthesis of Nitrogen Containing Heterocyclic Compounds“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Green Synthesis of Nitrogen Containing Heterocyclic Compounds"

Popovics-Tóth, Nóra, und Erika Bálint. „Multicomponent Synthesis of Potentially Biologically Active Heterocycles Containing a Phosphonate or a Phosphine Oxide Moiety“. Acta Chimica Slovenica 69, Nr. 4 (15.12.2022): 735–55. http://dx.doi.org/10.17344/acsi.2022.7648.

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Several multicomponent synthetic approaches were elaborated for plenty of novel nitrogen or oxygen heterocycles containing a phosphonate or a phosphine oxide moiety. All multicomponent reactions were optimized through a model reaction in respect of the heating mode, molar ratio of the starting materials, atmosphere, catalyst, temperature, reaction time and solvent applied, and then, the extended preparation of small libraries of structurally-related compounds was performed. Most of the reactions could be considered as “green syntheses”, as they were carried out in the absence of any catalyst and/or solvent using microwave (MW) irradiation or even at ambient temperature. The scaling-up of a MW-assisted synthesis was also elaborated in a continuous flow MW system. Altogether more than 150 heterocyclic organophosphorus compounds were synthesized, among them several derivatives showed moderate or promising activity against the HL-60 cell line and Bacillus subtilis bacteria.

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Banewar, Vishal. „Green Synthesis andIn VitroBiological Evaluation of Heteroaryl Chalcones and Pyrazolines of Medicinal Interest“. Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/542973.

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Pyrazolines are well known and important nitrogen containing 5-membered heterocyclic compounds. In the present investigation, a series of various heteroaryl chalcones and pyrazolines were synthesized by condensing formylquinolines with diverse ketones. The newly synthesized 2-pyrazolines were characterized on the basis of elemental analysis and spectroscopic data. All of the newly synthesized target compounds were selected by the NCI forin vitrobiological evaluation. These active compounds exhibited broad spectrum of various biological activities. Most of the compounds showed potent activity.

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Campos, Joana F., und Sabine Berteina-Raboin. „Greener Synthesis of Nitrogen-Containing Heterocycles in Water, PEG, and Bio-Based Solvents“. Catalysts 10, Nr. 4 (14.04.2020): 429. http://dx.doi.org/10.3390/catal10040429.

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The solvents used in chemistry are a fundamental element of the environmental performance of processes in corporate and academic laboratories. Their influence on costs, health safety, and nature cannot be neglected. Quantitatively, solvents are the most abundant constituents of chemical transformations; therefore, acting on solvents and replacing standard solvents with safer products can have a great ecological impact. However, not all green solvents are suitable for the wide scope of organic chemistry reactions. A second point to consider is that 50% of pharmaceutical drugs are nitrogen heterocycles compounds. It therefore appeared important to provide an overview of the more ecological methodologies for synthesizing this class of compounds. In this review, all publications since 2000 that describe green reactions leading to the formation of nitrogen heterocycles using safe solvents were considered. We chose water, PEG, and bio-based solvents for their negligible toxicity. The synthesis of five-, six-, and seven-membered aromatic nitrogen heterocycles using green reactions reported in the literature to date is described.

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García-Báez, Efrén V., Itzia I. Padilla-Martínez, Feliciano Tamay-Cach und Alejandro Cruz. „Benzothiazoles from Condensation of o-Aminothiophenoles with Carboxylic Acids and Their Derivatives: A Review“. Molecules 26, Nr. 21 (28.10.2021): 6518. http://dx.doi.org/10.3390/molecules26216518.

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Nowadays, organic chemists are interested in the field of heterocyclic chemistry due to its use in the synthesis of a great variety of biologically active compounds. Heterocyclic compounds are widely found in nature and are essential for life. Among these, some natural nitrogen containing heterocyclic compounds have been used as chemotherapeutic agents. Their attachment to sugar molecules either as thioglycosides or as nucleosides analogues plays an important role in vital biological processes as well as in synthetic organic chemistry. Molecules containing benzothiazole (BT) nuclei are of this interesting class of compounds because some of them have been found to have a wide variety of biological activities. In this sense, we selected this topic to review and to then summarize the procedures related to the condensation reactions of o-aminothiophenoles (ATPs) as well as their disulfides with carboxylic acids, esters, orthoesters, acyl chlorides, amides, and nitriles. The condensation reactions with carbon dioxide (CO2) are included. Conventional methods with the use of acid and metal catalysts as well as recent green techniques, such as microwave irradiation, the use of ionic liquids, and ultrasound (US) chemistry, which have proven to have many advantages, were found in the review.

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Vlocskó, R. Bernadett, Guoshu Xie und Béla Török. „Green Synthesis of Aromatic Nitrogen-Containing Heterocycles by Catalytic and Non-Traditional Activation Methods“. Molecules 28, Nr. 10 (17.05.2023): 4153. http://dx.doi.org/10.3390/molecules28104153.

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Recent advances in the environmentally benign synthesis of aromatic N-heterocycles are reviewed, focusing primarily on the application of catalytic methods and non-traditional activation. This account features two main parts: the preparation of single ring N-heterocycles, and their condensed analogs. Both groups include compounds with one, two and more N-atoms. Due to the large number of protocols, this account focuses on providing representative examples to feature the available methods.

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Kaur, Navjeet. „Ionic Liquid Promoted Eco-friendly and Efficient Synthesis of Six-membered Npolyheterocycles“. Current Organic Synthesis 15, Nr. 8 (17.12.2018): 1124–46. http://dx.doi.org/10.2174/1570179415666180903102542.

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Background: The synthesis of N-polyheterocycles by environmentally benign method is highly attractive but challenging proposition. New strategies have been developed for the preparation of polycyclic heterocycles in the last decades. In this review article, the synthesis of nitrogen containing six-membered polycyclic heterocyclic compounds is presented with the application of ionic liquids. This contribution focuses on the literature related to the total synthesis of six-membered N-polyheterocycles. Objective: Ionic liquids not only acted as environmentally benign reaction media but also as catalysts which afforded the very promising replacements of traditional molecular solvents in organic chemistry due to their stability, non-flammability, non-volatility and ease of recyclability. Ionic liquids are utilized in metal catalyzed reactions in place of organic solvents in the last years. It has attracted considerable attention in recent years. Ionic liquids acted as alternatives of organic solvents and these ILs are environment friendly. Conclusion: In the area of green chemistry ionic liquid assisted synthesis is a very promising technique which afforded a flexible platform for the formation of heterocycles. The influence of ILs on the development of efficient and new synthetic protocols over the last decade for the construction of N-polyheterocycles is featured in this review article. These synthetic strategies will continue to attract more attention and will find a wide range of applications in organic synthesis. In conclusion, ionic liquids assisted syntheses have become an efficient and powerful tool in organic chemistry quickly.

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Kumar, Avinash, Sunanda Saxena, Ajay Verma und Shashi Bhooshan Tiwari. „SYNTHESIS OF DIFFERENT OXADIAZOLES: A CRITICAL REVIEW“. International Journal of Pharmaceutical Sciences and Medicine 8, Nr. 5 (30.05.2023): 111–24. http://dx.doi.org/10.47760/ijpsm.2023.v08i05.014.

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Oxadiazoles are an interesting class of five-membered heterocyclic compounds containing two atoms of nitrogen and one atom of oxygen [1]. Their lipophilicity is a key property that affects a drug's ability to arrive at the focus by trans-membrane diffusion, and their action against benign tuberculosis by inhibiting lipid biosynthesis is highly promising. This review was emphasized on the synthesis of different oxadiazoles with scheme. For the same, a detailed literature survey was done. Antimicrobial, anticonvulsant, antiepileptic, antiallergic, anticancer, anti-tubercular, and insecticidal actions are just few of the many biological effects shown by 1,3,4-oxadiazole derivatives. The Green Chemistry Program was launched in 1991 by the Environmental Protection Agency and the National Science Foundation. A joint effort between J.C. To lessen or do away with chemical dangers and environmental degradation, Warner has developed twelve key principles of green chemistry. It is necessary to create new medications for the treatment of pain and inflammation without the frequent adverse effects of NSAIDs (gas, bloating, heartburn, ulcer, stomach discomfort). In conclusion, the oxadiazole derivatives are more effective than nonsteroidal anti-inflammatory drugs (NSAIDs) in treating pain and inflammation-induced arthritis. The compounds of 1,3,4-oxadiazole were synthesized using microwave assistance technique.

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Bayat, Mohammad, und Shima Nasri. „Modified Kappa-Carrageenan as a Heterogeneous Green Catalyst for the Synthesis of Nitrogen and Sulfur-Containing Indenone-Fused Heterocyclic Compounds“. Journal of Heterocyclic Chemistry 55, Nr. 3 (15.01.2018): 650–59. http://dx.doi.org/10.1002/jhet.3083.

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Sharma, Pratibha, Raakhi Gupta und Raj Kumar Bansal. „Recent advances in organocatalytic asymmetric aza-Michael reactions of amines and amides“. Beilstein Journal of Organic Chemistry 17 (18.10.2021): 2585–610. http://dx.doi.org/10.3762/bjoc.17.173.

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Nitrogen-containing scaffolds are ubiquitous in nature and constitute an important class of building blocks in organic synthesis. The asymmetric aza-Michael reaction (aza-MR) alone or in tandem with other organic reaction(s) is an important synthetic tool to form new C–N bond(s) leading to developing new libraries of diverse types of bioactive nitrogen compounds. The synthesis and application of a variety of organocatalysts for accomplishing highly useful organic syntheses without causing environmental pollution in compliance with ‘Green Chemistry” has been a landmark development in the recent past. Application of many of these organocatalysts has been extended to asymmetric aza-MR during the last two decades. The present article overviews the literature published during the last 10 years concerning the asymmetric aza-MR of amines and amides catalysed by organocatalysts. Both types of the organocatalysts, i.e., those acting through non-covalent interactions and those working through covalent bond formation have been applied for the asymmetric aza-MR. Thus, the review includes the examples wherein cinchona alkaloids, squaramides, chiral amines, phase-transfer catalysts and chiral bifunctional thioureas have been used, which activate the substrates through hydrogen bond formation. Most of these reactions are accompanied by high yields and enantiomeric excesses. On the other hand, N-heterocyclic carbenes and chiral pyrrolidine derivatives acting through covalent bond formation such as the iminium ions with the substrates have also been included. Wherever possible, a comparison has been made between the efficacies of various organocatalysts in asymmetric aza-MR.

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Aronica, Laura Antonella, und Gianluigi Albano. „Supported Metal Catalysts for the Synthesis of N-Heterocycles“. Catalysts 12, Nr. 1 (09.01.2022): 68. http://dx.doi.org/10.3390/catal12010068.

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Nitrogen-containing heterocycles are important scaffolds for a large number of compounds with biological, pharmaceutical, industrial and optoelectronic applications. A wide range of different methodologies for the preparation of N-heterocycles are based on metal-catalyzed cyclization of suitable substrates. Due to the growing interest in Green Chemistry criteria over the past two decades, the use of supported metal catalysts in the preparation of N-heterocycles has become a central topic in Organic Chemistry. Here we will give a critical overview of all the solid supported metal catalysts applied in the synthesis of N-heterocycles, following a systematic approach as a function of the type of support: (i) metal catalysts supported on inorganic matrices; (ii) metal catalysts supported on organic matrices; (iii) metal catalysts supported on hybrid inorganic-organic matrices. In particular, we will try to emphasize the effective heterogeneity and recyclability of the described metal catalysts, specifying which studies were carried out in order to evaluate these aspects.

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Dissertationen zum Thema "Green Synthesis of Nitrogen Containing Heterocyclic Compounds"

Chettri, Sailesh. „Exploration of Catalytic Activities of Some Transition Metal Borates for Green Synthesis of Nitrogen Containing Heterocyclic Compounds“. Thesis, University of North Bengal, 2022. http://ir.nbu.ac.in/handle/123456789/5098.

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Burnett, Duane Arthur. „Synthesis of nitrogen containing heterocycles /“. The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487264603219377.

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Cai, Chunming. „Microwave mediated synthesis of nitrogen- and/or oxygen-containing compounds“. [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013762.

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Chakraborty, Rakesh Ranjan. „Explorative studies on carbon-nitrogen (C-N) bond formation and synthesis of nitrogen containing heterocyclic compounds“. Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2798.

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Benedetti, Erica. „Cycloisomerization reactions catalyzed by transition metal complexes : synthesis of oxigen-and nitrogen-containing heterocyclic compounds“. Paris 6, 2011. http://www.theses.fr/2011PA066448.

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Ces dernières années, le besoin de méthodes éco-compatibles pour la préparation d’une vaste gamme de produits chimiques requis par la société a poussé la recherche à développer de nouveaux procédés de synthèse qui soient plus efficaces et économiques. Afin de minimiser l'utilisation de matières premières et la production de déchets, une réaction chimique devrait procéder selon les principes d’économie d’atomes. Plus précisément, une séquence synthétique devrait idéalement avoir lieu avec un contrôle complet de la stéréochimie, de manière quantitative et sans formation de produits secondaires. Les réactions de cyclisation des systèmes polyinsaturés, catalysées par les métaux de transition, offrent une opportunité réelle d'atteindre les objectifs exposés ci-dessus. Dans cette thèse, quatre différentes classes de réactions de cyclisation, catalysées par les métaux de transition, ont été traitées: (1) les métathèses des dienes et des énynes, (2) les carbonylations de Pauson-Khand, (3) l’activation électrophile d'alcynes catalysée par l'iridium et (4) les cycloisomerizations d’allènes catalysées par l'or. Ces méthodologies, qui ont permis d'obtenir une haute complexité moléculaire en une seule étape de synthèse, ont été utilisées avec succès pour la formation de nombreux composés hétérocycliques oxygénés et azotés. Des études, qui décrivent la large applicabilité de ces réactions, sont publiées avec un rythme très rapide. Dans le futur, la découverte de nouvelles transformations catalysées par les métaux de transition continuera sûrement à occuper un rôle central dans la synthèse organique

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Buchteile zum Thema "Green Synthesis of Nitrogen Containing Heterocyclic Compounds"

Dinodia, Monica. „Greener Approach towards the Synthesis of Nitrogen Based Heterocycles“. In Strategies Towards the Synthesis of Heterocycles and Their Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108489.

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The preferable application of green chemistry in research is to utilize environment benign, mild, non toxic, reproducible catalyst and efficient solvents in synthesis of molecules. Use of green chemistry techniques had enabled in dramatically reducing chemical waste and reaction times as has recently been reported in several organic syntheses reactions. Greener routes are required in the synthesis of N-heterocycles, due to the remarkable importance of these compounds in medicinal chemistry. This chapter is dedicated to the synthesis of N containing heterocyclic compounds using eco-friendly solvent like water and bio-derived solvents (glycerol, ethyl lactate, and gluconic acid aqueous solution). Water and bio-based solvents for the synthesis of aromatic nitrogen heterocycles was chosen due to the negligible toxicity associated with these solvents. Apart from being eco-friendly, water also has the potential to become a universally acceptable solvent due to its abundance and low cost. Work on microwave synthesis is also reported as it is an eco-friendly and faster process for the synthesis of these N-based heterocyclic compounds. Due to its rapid action to produce products with greater purity and yield, it is now being used worldwide.

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„Thiophene Synthesis“. In Greener Organic Transformations, 174–77. The Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781837670895-00174.

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Thiophenes are sulfur-containing aromatic heterocycles, the simple derivatives of which are stable liquids. Unlike their nitrogen-containing analogues, thiophene-containing compounds rarely occur in plants and have no role in the metabolism of animals. This chapter introduces the traditional synthesis of thiophenes before looking at the issues around the reactions and some green chemistry solutions.

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Sahu, Reema, Dakeshwar Kumar Verma und Elyor Berdimurodov. „Nitrogen-containing heterocyclic compounds as green corrosion inhibitors“. In Computational Modelling and Simulations for Designing of Corrosion Inhibitors, 373–94. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-323-95161-6.00009-6.

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Segi, Masahito, Aojia Zhou, Masumi Kojima, Katsuhiko Tanno, Yuki Endo und Mitsunori Honda. „Synthesis of Heterocyclic Compounds Containing Selenium and Nitrogen Atoms via Cycloaddition Reaction of Selenoaldehydes“. In 19th International Congress on Heterocyclic Chemistry, 312. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-08-044304-1.50304-x.

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Uygun Cebeci, Yıldız. „Advantages and Applications of Microwave Assisted Synthesis of Heterocyclic Compounds in Pharmaceutical Chemistry“. In Academic Researches in Mathematics and Science. Özgür Yayınları, 2023. http://dx.doi.org/10.58830/ozgur.pub132.c613.

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Heterocyclic compounds constitute the largest and most important category of organic chemistry. Heterocyclic compounds constitute 80% of the drugs available on the market. There are mostly 5-membered heterocyclic compounds in the structure of natural compounds, vitamins, nucleic acids, hormones and synthetic drugs. Many of the methods used to synthesize heterocyclic compounds are not sustainable. In recent years, it has started to use the microwave method to synthesize many compounds more effectively, including nitrogen-containing five-membered heterocyclic compounds. The microwave method provides great advantages over traditional heating methods such as homogeneous heat distribution, cleaner chemistry, improved yields, reduction in reaction times, and higher product quality.

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„3. Recent advances in the application of carbohydrates as renewable feedstocks for the synthesis of nitrogen-containing compounds“. In Green Chemistry Education, 35–66. Berlin, Boston: De Gruyter, 2018. http://dx.doi.org/10.1515/9783110566499-003.

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Khalifa, Zebabanu, Rachana Upadhyay, Premlata Kumari und Amit B. Patel. „Current Development in the Synthesis of Benzimidazole-Quinoline Hybrid Analogues and their Biological Applications“. In Strategies Towards the Synthesis of Heterocycles and Their Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108949.

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Heterocyclic compounds have an essential role in many domains of medicinal chemistry. Many pharmaceutical industries use and investigate nitrogen-containing heterocycles because they are crucial in discovering and developing novel therapeutically active compounds. The benzimidazole moiety is a fundamental component of many heterocyclic scaffolds, which play an important role in producing a wide range of biological activities. Similarly, quinoline is also a versatile bicyclic heterocyclic scaffold with many medicinal applications. It is an essential scaffold for drug discovery leads, and it plays a significant role in medicinal chemistry and has biological activities similar to benzimidazole scaffolds. The present chapter discusses the quinoline-benzimidazole hybrids scaffolds and their potential pharmacological activities.

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Sakander, Norein, Ajaz Ahmed, Bisma Rasool und Debaraj Mukherjee. „An Overview of N-heterocyclic carbene: Properties and Applications“. In Electrophile and Lewis Acid [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1001331.

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N-Heterocyclic carbenes are regarded as neutral compounds containing a divalent carbon atom with a six-electron valence shell, carbenes are an intriguing class of carbon-containing compounds. The successful isolation and characterization of an N-heterocyclic carbene in 1991 opened up a new class of organic compounds for investigation. They are cyclic molecules that contain one carbene and at least one nitrogen atom within the carbene-containing ring structure. These molecules are widely used as ancillary ligands for the preparation of transition-metal-based catalysts and also possess a unique characteristic feature i.e. Umpolung nature. The underlying principle of many of the NHC-catalyzed reactions is the remarkable ability of NHCs to reverse the normal mode of reactivity of aldehydes (umpolung). NHCs can catalyze transformations proceeding via the umpolung or nonumpolung mode for the synthesis of various functionalized molecules.

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Aziz Ali, Abdul. „1,2,3-Triazoles: Synthesis and Biological Application“. In Azoles - Synthesis, Properties, Applications and Perspectives [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92692.

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Among nitrogen-containing heterocyclic compounds, 1,2,3-triazoles are privileged structure motif and received a great deal of attention in academics and industry. Even though absent in nature, 1,2,3-triazoles have found broad applications in drug discovery, organic synthesis, polymer chemistry, supramolecular chemistry, bioconjugation, chemical biology, fluorescent imaging, and materials science. Therefore, the development of facile and straightforward methodology for the synthesis of 1,2,3-triazoles is of noteworthy interest. In this study, emphasis will be given to numerous synthetic approaches for the synthesis of 1,2,3-triazoles, especially the popular click chemistry approach. Furthermore, several biological activities of this promising heterocycle will also be discussed.

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Najajreh, Yousef, und Maha Awwad Khoury. „Synthetic Approaches for Pharmacologically Active Decorated Six-Membered Diazines“. In Strategies Towards the Synthesis of Heterocycles and Their Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.109103.

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Diazine alkaloid (pyridazine, pyrimidine and pyrazine) scaffold, a widespread two-nitrogen containing compounds in nature (DNA, RNA, flavors, and fragrances), constitutes a central building block for wide range of pharmacological applications. Diazines are reported to exhibit antimetabolite (antifolate and), anticancer, antibacterial, antiallergic, tyrosine kinase, antimicrobial, calcium channel antagonistic, anti-inflammatory, analgesic, antihypertensive, antileishmanial, antituberculostatic, anticonvulsant, diuretic and potassium-sparing, to antiaggressive activities. Pyridazine (1,2-diazine), pyrimidine (1,3-diazine) and pyrazine (1,4-diazine) are found as mono-systems, fused or annulated in pharmaceutical, agrochemical or materials. These six-membered heterocyclic aromatic moieties defined as privileged scaffolds constitute diverse chemical structures and as such hold substantial interest for organic, medicinal and biological chemists. This chapter will focus on elaboration of the different synthetic approaches applied in preparing pharmacologically active decorated diazines with special care on pyrimidines (non-fused substituted forms) that are endowed with clinical applications. Synthetic approaches applied in preparing selected FDA approved drugs with pyrimidine as a central unit bearing different substituents will be intensively explored. Special attention will be given to novel synthetic methodologies that served molecules with improved druglikeness and ADME-Tox properties.

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Konferenzberichte zum Thema "Green Synthesis of Nitrogen Containing Heterocyclic Compounds"

Drokin, R., D. Gazizov, D. Tiufiakov, E. Voinkov, E. Gorbunov, E. Ulomsky, G. Rusinov und V. Rusinova. „POTASSIUM SALTS OF NITROCARBONYL COMPOUNDS IN THE SYNTHESIS OF NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS“. In Chemistry of nitro compounds and related nitrogen-oxygen systems. LLC MAKS Press, 2019. http://dx.doi.org/10.29003/m749.aks-2019/187-189.

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