Relevant bibliographies by topics / Cyclocondensation reactions

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Cyclocondensation reactions'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Cyclocondensation reactions"

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Stadlbauer, Wolfgang, El-Sayed Badawey, Gerhard Hojas, Peter Roschger, and Thomas Kappe. "Malonates in Cyclocondensation Reactions." Molecules 6, no. 4 (2001): 338–52. http://dx.doi.org/10.3390/60400338.

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Duburs, Gunãrs, and Alvils Sausins. "Synthesis of 1,4-Dihydropyridines by Cyclocondensation Reactions." HETEROCYCLES 27, no. 1 (1988): 269. http://dx.doi.org/10.3987/rev-87-370.

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Campos, Patrick T., Leticia V. Rodrigues, Andrei L. Belladona, et al. "Regiochemistry of cyclocondensation reactions in the synthesis of polyazaheterocycles." Beilstein Journal of Organic Chemistry 13 (February 10, 2017): 257–66. http://dx.doi.org/10.3762/bjoc.13.29.

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The syntheses of several polyazaheterocycles are demonstrated. The cyclocondensation reactions between β-enaminodiketones [CCl3C(O)C(=CNMe2)C(O)-CO2Et] and aromatic amidines resulted in glyoxalate-substituted pyrido[1,2-a]pyrimidinone, thiazolo[3,2-a]pyrimidinone and pyrimido[1,2-a]benzimidazole. Pyrazinones and quinoxalinones were obtained through the reaction of these glyoxalates with ethylenediamine and 1,2-phenylenediamine derivatives. On the other hand, the reaction of glyoxalates with amidines did not lead to the formation of imidazolones, but rather N-acylated products were obtained. Al
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Pfeiffer, Wolf-Diethard, Helmut Gille, Ehrenfried Bulka, Ashot Saghyan, and Peter Langer. "Cyclocondensations of Substituted Thiosemicarbazides with 2-Bromo- 1,2-diphenylethan-1-one." Zeitschrift für Naturforschung B 68, no. 7 (2013): 823–30. http://dx.doi.org/10.5560/znb.2013-3036.

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The cyclocondensation of 4-methylthiosemicarbazide with 2-bromo-1,2-diphenylethan-1-one in ethanol afforded isomeric 2-methylamino-5,6-diphenyl-6H-3,4-thiadiazine and 2-hydrazono-3- methyl-4,5-diphenyl-2,3-dihydro-1,3-thiazole. A pyrazole was obtained by cyclocondensation and subsequent desulfurization of the thiadiazine when the reaction was carried out in concentrated hydrochloric acid. A chemical proof of the structures has been provided. The product distribution of the cyclizations strongly depends on the substitution pattern of the starting materials, and the cyclizations of methylthiosem
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Khidre, Rizk E., Tahah A. Ameen, and Mounir A. I. Salem. "Tetrazoloquinolines: Synthesis, Reactions, and Applications." Current Organic Chemistry 24, no. 4 (2020): 439–64. http://dx.doi.org/10.2174/1385272824666200217095341.

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This review summarizes the synthesis, reactions, and biological activities of tetrazolo[1,5-a]quinoline derivatives. These derivatives were synthesized by several methods such as i) from the reaction of 2-chloroquinoline with sodium azide ii) from diazotization 2-hydrazinylquinoline derivatives, and iii) from intramolecular cyclocondensation of 2-azidoarylidenes. Also, the chemical reactions and pharmacological activities of some tetrazoloquinolines such as tetrazolo[1,5-a]quinoline-4-carbaldehyde, 5-chlorotetrazolo[ 1,5-a]quinoline, 4-(chloromethyl)tetrazolo[1,5-a]quinoline, tetrazolo[1,5- a]
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Sausins, A. E., and G. Duburs. "Synthesis of 1,4-dihydropyridines in cyclocondensation reactions (review)." Chemistry of Heterocyclic Compounds 28, no. 4 (1992): 363–91. http://dx.doi.org/10.1007/bf00766993.

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Pagilla, Shankaraiah, Angajala Kumar, Vianala Sunitha, and Anagani Bhavani. "PEG mediated synthesis of 6-pyrazinyl-/fused pyrazinylquinazolin-4(3H)-ones using Castro-Stephen coupling, oxidation and cyclocondensation reactions." Journal of the Serbian Chemical Society 85, no. 5 (2020): 601–8. http://dx.doi.org/10.2298/jsc190517014p.

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A PEG-mediated green synthesis of 6-pyrazinyl-/fused pyrazinylquinazolin- 4(3H)-ones was developed starting from 6-iodo-3-methyl-2-phenylquinazolin- 4(3H)-one by means of quinazolinone-based internal alkyne/1,2-diketone as intermediates using the Castro?Stephen coupling reaction/potassium permanganate mediated oxidation and cyclocondensation reactions.
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Heravi, Majid M., and Vahideh Zadsirjan. "Recent Advances in Biginelli-type Reactions." Current Organic Chemistry 24, no. 12 (2020): 1331–66. http://dx.doi.org/10.2174/1385272824999200616111228.

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The effective and high yielding synthesis of poly-functionalized pyrimidines, using multicomponent reactions (MCRs), is imperative in organic and medicinal chemistry. The classic Biginelli reaction is a typically one-pot three-component cyclocondensation reaction involving an aldehyde, a β-ketoester and urea, resulting in the construction of multi-functionalized 3,4-dihydropyrimidin-2(1H)-ones (DHPMs). In recent years, other active methylene compounds, various derivatives of urea and diversely substituted aldehydes have also been used, resulting in the preparation of a new series of v
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S. Londhe, Balaji, Santosh L. Khillare, Avinash M. Nalawade, and Ramrao A. Mane. "BAKERS YEAST CATALYZED AND ULTRASOUND ACCELERATED SYNTHESIS OF 2-AMINO-2-CHROMENES." International Journal of Advanced Research 9, no. 01 (2021): 189–95. http://dx.doi.org/10.21474/ijar01/12294.

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In the present work, bakers yeast catalyzed efficient synthesis of 2-amino-2-chromenes in methanol is presented. Here the ultrasonication has dual role i.e. as a source of energy for the reaction and tool for the disruption of the yeast cells. The cyclocondensation has been essentially carried under neutral conditions, thus reducing the possibility of unwanted side reactions.
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Sokolova, Ekaterina A., Alexey A. Festa, Karthikeyan Subramani, et al. "Microwave-Assisted Synthesis of Fluorescent Pyrido[2,3-b]indolizines from Alkylpyridinium Salts and Enaminones." Molecules 25, no. 18 (2020): 4059. http://dx.doi.org/10.3390/molecules25184059.

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Pyridinium ylides are well recognized as dipoles for cycloaddition reactions. In its turn, the microwave-assisted interaction of N-(cyanomethyl)-2-alkylpyridinium salts with enaminones unexpectedly proceeds as a domino sequence of cycloisomerization and cyclocondensation reactions, instead of a 1,3-dipolar cycloaddition. The reaction takes place in the presence of sodium acetate as base and employs benign solvents. The optical properties of the resulting pyrido[2,3-b]indolizines were studied, showing green light emission with high fluorescence quantum yields.
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Dissertations / Theses on the topic "Cyclocondensation reactions"

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Leftwich, Timothy Ray. "Modification of silicon-based substrates with cyclocondensation and cycloaddition reactions." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 111 p, 2010. http://proquest.umi.com/pqdweb?did=1992491831&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Ghirardi, Elena. "Enantio- and Diastereoselective Cyclocondensation Reactions. Stereocontrolled Access to Azabicycles and Application to Natural Product Synthesis." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/398789.

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The first objective of this Thesis was the study of the preparation of octhydro-1H-cyclopenta[b]pyridines and octahydro-1H-indoles, through the synthesis of (R)-phenylglycinol derived tricyclic lactams. Following the previous reported methodology a carbon substituent would be present at the carbocyclic ring and we planned to find the conditions for controlling its absolute configuration. Unfortunately, the reaction of ketoester 4 and ketoacid 7, provided undesired enamines 8 and 9. On the other hand, the reaction of ketoacid derivatives 16 and 17 with (R)-phenylglycinol led to a mixture of epi
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Moreira, Dayse das Neves. "Síntese de pirazóis e desenvolvimento de novos líquidos iônicos derivados de componentes farmacologicamente ativos." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/4214.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The synthesis of two series of N-substituted pyrazoles from the cyclocondensation reaction of β-enaminones ([R1C(O)C(R2)=CHN(Me2)], where R1 = Me, C6H5, 3-MeOC6H4, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, 4-O2N-C6H4, fur-2-il, thien-2-il; R2 = H, 2-MeO-C6H4) and 2-hydroxyethylhydrazine or 1-pentafluorophenylhydrazine was demonstrated. The reactions were performed in five ionic liquids ([BMIM][BF4], [BMIM][Br], [BMIM][OH], [HMIM][HSO4] e [BPy][BF4]) with different physical and chemical properties to establish the
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LE, MENN JEAN-CHRISTO. "Etude electrochimique de la reactivite de carbanions phosphonate et halogenomalonate : reactions de wittig-horner ou de darzens, alkylations, formylations, cyclocondensations." Rennes 1, 1989. http://www.theses.fr/1989REN10091.

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Muraro, Paulo Isaias Rossato. "Uso de microondas na síntese de 3-alquil(aril)-5-hidróxi-5-triclorometil-4,5-diidro-1h-pirazol-1-carboxiamida." Universidade Federal de Santa Maria, 2005. http://repositorio.ufsm.br/handle/1/10399.

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A series of 3-alkyl and 3-aryl-5-hydroxy-5-trichloromethyl-4,5-dihydro-1Hpirazoles-1-carboxiamide that possess biological activity they were synthesized, in good yeld, through the cyclocondensation, in microwaves, of 4-alcoxi-1,1,1-trihalometyl-3alquen-2-onas with semicarbazyde chloride using MeOH/H2O as solvent. The advantage obtained with the use of irradiation of microwaves in relation to the classic methodology it is the decrease of the time reacional and revenue increase as it will be demonstrated.<br>Uma série de 3-alquil(aril) 5-hidroxi 5-triclorometil-4,5-diidropirazol-1-carboxiamida,
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Vargas, Pâmela Schütz de. "Síntese de 1-aril-4-[(dimetilamino)metileno] pirrolidino-2,3,5-trionas utilizando irradiação de micro-ondas." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/10489.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The synthesis of a series of 1-aryl-4-[(dimethylamino)methylene] pyrrolidine- 2,3,5-trione from the cyclocondensation reaction between b-enaminodiketone [Cl3C(O)C(=CHNMe2)C(O)CO2Et] and aniline derivatives [R = Ph, 3-Me-C6H4, 3- MeO-C6H4, 3-HO-C6H4, 4-Me-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, 4-O2N-C6H4, 4- MeCO-C6H4] was performed. The reaction conditions used to synthesize the pyrrolidine-2,3,5-triones involved environmentally benign techniques, as the use of microwave irradiation, employing the reactants b-enaminodiketone and a
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Asad, Ali [Verfasser]. "Synthesis of sterically encumbered biaryls by [3+3] cyclocondensation reactions and synthesis of arylated pyrazoles, bis(diaryl)sulfones, and bis(alkenyl)pyridines by Pd(0)-catalysed cross-coupling reactions / vorgelegt von Ali Asad." 2010. http://d-nb.info/1010726609/34.

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Sher, Muhammad [Verfasser]. "Synthesis of functionalized homophthalates, salicylates, diaryl ethers and dihydroisocoumarins based on cyclocondensation reactions of 1,3-Dicarbonyl compounds and 1,3-Bis(silyloxy)-1,3-butadienes / vorgelegt von Muhammad Sher." 2008. http://d-nb.info/991886887/34.

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Abid, Obaid-ur-Rahman [Verfasser]. "Synthesis of functionalized 4-chlorophthalates, 2-naphthoates, 2-fluorobiaryls, and arylpyridines by cyclocondensation reactions of 1,3-bis(silyloxy)-1,3-butadienes and related dienes and by palladium(0) catalyzed cross coupling reactions / vorgelegt von Obaid-ur-Rahman Abid." 2010. http://d-nb.info/100780808X/34.

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Karapetyan, Vahuni [Verfasser]. "Synthesis of bridged and non-bridged N-heterocycles, dichloromethyl- and formyl-salicylates, pyran-4-ones, chromanes and isochromanes based on cyclocondensation reactions of 1,3-bis(silyloxy)-1,3-butadienes and oxime dianions / vorgelegt von Vahuni Karapetyan." 2009. http://d-nb.info/1001599659/34.

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Book chapters on the topic "Cyclocondensation reactions"

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Devkate, Chandrashekhar, Satish Kola, Mohammad Idrees, Naqui J. Siddiqui, and Roshan D. Nasare. "Eco-Friendly, Green Approach for Synthesis of Bio-Active Novel 3-Aminoindazole Derivatives." In Green Computing Technologies and Computing Industry in 2021. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95565.

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In present chapter we have reported green and highly efficient method for synthesize novel series of substituted -1H-indazol-3-amine derivative (3a-h) by cyclocondensation reaction of substituted benzonitrile (1a-h) and substituted Hydrazine (2a-h) using ceric (IV) ammonium nitrate (CAN) as a catalyst, EtOH-H2O as a ecofriendly media and reaction was carried out under ultrasound irradiation green method. The structures of newly synthesized indazole derivative (3a-h) were corroborated through spectral investigation such as elemental analysis and spectral studies like IR, C13 NMR, Mass spectra and 1H NMR. The compounds were assessed for their in-vitro antimicrobial activity with pathogenic microbe comprising Gram positive bacterial strains, S. aureus and Gram negative strains E.coli, P.vulgaris, and S. typhi at different concentration. The consequence of bioassay is compared with standard drug Chloramphenicol.
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Conference papers on the topic "Cyclocondensation reactions"

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Andrighetto, Rosália, Helio G. Bonacorso, Jussara Navarini, Nícolas Krüger, Marcos A. P. Martins, and Nilo Zanatta. "Highly Efficient Synthesis of CF3-Containing 7-Aminoquinolines From Cyclocondensation Reaction of Trifluoroacetyl Enamine Precursors." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0008-1.

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Anichina, K. "SYNTHESIS AND ANTINEMATODAL ACTIVITY STUDIES OF SOME FUSED TRIAZINOBENZIMIDAZOLES." In International Trends in Science and Technology. RS Global Sp. z O.O., 2020. http://dx.doi.org/10.31435/rsglobal_conf/30122020/7351.

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4-Aryl-3,4-dihydro[1,3,5]triazino[1,2-a]benzimidazole-2-amines 3a-f were synthesized in the reaction of cyclocondensation between 2-guanidinobenzimidazole and versatilebenzaldehydes. Structures of all prepared compounds were confirmed by IR, 1H NMR spectroscopyand elemental analysis.Antinematodal activity in vitro of the substances was investigated using isolated Trichinella spiralis muscle larvae. The tested triazonobenzimidazoles showed different activity depending on the substituent R in their moleculeas the derivatives substituted with a hydroxyl group demonstrated the best anti-Trichinell
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