Relevant bibliographies by topics / Dihydrofurane derivatives

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

Academic literature on the topic 'Dihydrofurane derivatives'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Dihydrofurane derivatives"

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Oremus, Vladimír, Lubor Fišera, and Ladislav Štibrányi. "Preparation and photochemistry of 3-cyanosubstituted condensed isoxazolines containing an oxygen atom." Collection of Czechoslovak Chemical Communications 52, no. 7 (1987): 1773–79. http://dx.doi.org/10.1135/cccc19871773.

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The 1,3-dipolar cycloaddition of cyanonitrile oxide to 2,3- and 2,5-dihydrofurane, 7-oxabicyclo[2,2,1]-2-heptene and derivatives of 1,3-dioxep-5-ene is described. The condensed isoxazolines Ia, IIIa, Va, Vc, Vd thus prepared are rearranged on irradiation into cyanosubstituted heterocyclic enaminoaldehydes IIa, IVa, VIa, VIc. The quantum yields of the photorearrangement of cyanoderivatives are higher than those of the phenyl derivatives, being within the limits from 0·068 to 0·19. The reaction of II with hydrazine gives the derivative IX of oxazino[4,5-d]pyridazine.
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2

Reissig, Hans-Ulrich, and Reinhold Zimmer. "Cyclizations of Alkoxyallenes: Mechanisms, Intermediates, ­Products – A Personal Account on Solved and Unsolved Problems with Unique Allene Building Blocks." Synthesis 49, no. 15 (2017): 3291–302. http://dx.doi.org/10.1055/s-0036-1588846.

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The additions of lithiated alkoxyallenes to electrophiles, such as carbonyl compounds, thioketones, imines, and nitrones, provide the expected primary addition products. These alkoxyallene intermediates undergo ring-closure reactions under quite different conditions. Whereas allenyl hydroxylamine derivatives spontaneously cyclize to 1,2-oxazine derivatives, the related allenyl amines, thiols, and alcohols require, with distinct exceptions, promotion by acids, base, silver(I), or gold(I). The different mechanisms of these processes are discussed in this account. The serendipitous discovery of a
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3

Buchta, Vladimír, Milan Pour, Petra Kubanová, et al. "In Vitro Activities of 3-(Halogenated Phenyl)-5-Acyloxymethyl- 2,5-Dihydrofuran-2-ones against Common and Emerging Yeasts and Molds." Antimicrobial Agents and Chemotherapy 48, no. 3 (2004): 873–78. http://dx.doi.org/10.1128/aac.48.3.873-878.2004.

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ABSTRACT Three 3-(halogenated phenyl)-5-acyloxymethyl-2,5-dihydrofuran-2-ones were evaluated for activity against 191 strains of common and emerging yeasts and Aspergillus species by the broth microdilution test performed according to NCCLS guidelines. The furanone derivatives displayed broad-spectrum in vitro activity against potentially pathogenic yeasts and molds, especially Aspergillus spp. (MIC ≤ 2.0 μg/ml) and fluconazole-resistant yeast isolates, including Candida glabrata and Saccharomyces cerevisiae. The 4-bromophenyl derivative was the most effective derivative against the majority o
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Siliveri, Sravanthi, Harinadha Babu Vamaraju, and Shivaraj. "Synthesis and Biological Evaluation of Furo[3,2-c]pyrazole-5-carbimidates." Asian Journal of Chemistry 31, no. 10 (2019): 2389–93. http://dx.doi.org/10.14233/ajchem.2019.21971.

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In the present work, novel pyrazole fused dihydrofurans synthesized via a chronological addition of N-chloro succinimide and base piperidine to pyrano[3,2-c]pyrazole carbonitrile derivatives in methanol medium. Oxidative difunctionalization was done with the reagent N-chloro succinimide by the addition of both chlorine and alkoxy groups crosswise the chromene double bond. The addition of base results in the construction of dihydrofuran derivatives by ring contraction. The structures of newly synthesized compounds were characterized on the basis of physical and spectral data. Synthesized compou
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Lu, Shan, Siegfried Draeger, Barbara Schulz, et al. "Bioactive Aromatic Derivatives from Endophytic Fungus, Cytospora sp." Natural Product Communications 6, no. 5 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600518.

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Two new benzyl γ-butyrolactone analogues, ( R)-5-(( S)-hydroxy(phenyl)-methyl)dihydrofuran-2(3H)-one (1) and its 6-acetate (2), and a new naphthalenone derivative (8), together with eight additional known aromatic derivatives, ( S)-5-(( S)-hydroxy(phenyl)-methyl)dihydrofuran-2(3H)-one (3), ( S)-5-benzyl-dihydrofuran-2(3H)-one (4), 5-phenyl-4-oxopentanoic acid (5), γ-oxo-benzenepentanoic acid methyl ester (6), 3-(2,5-dihydro-4-hydroxy-5-oxo-3-phenyl-2-furyl)propionic acid (7), (3 R)-5-methylmellein (9), integracins A (10) and B (11) were isolated from Cytospora sp., an endophytic fungus isolate
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Fišera, Lubor, Igor Goljer, and Libuše Jarošková. "Reaction of tetrahydrofuroisoxazoles with molybdenum hexacarbonyl. A new route to preparation of 3-substituted tetrahydro- and dihydrofuran derivatives." Collection of Czechoslovak Chemical Communications 53, no. 8 (1988): 1753–60. http://dx.doi.org/10.1135/cccc19881753.

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3-(4-X-Phenyl)-3a,4,6,6a-tetrahydrofuro[3,4-d]isoxazoles Ia-If (X = H, CH3, CH3O, Cl, F, C6H5) react with molybdenum hexacarbonyl to give not only the expected cis-3-aroyl-4-hydroxytetrahydrofuran III, but also its trans isomer IV and 3-aroyl-2,5-dihydrofuran II. This paper concerns a new preparation of 3-aroyl-2,5-dihydrofuran derivatives starting from 2,5-dihydrofuran via 1,3-dipolar cycloaddition of nitrile oxides, cleavage with molybdenum hexacarbonyl and dehydratation with p-toluenesulfonic acid. The structure of cis-(III) and trans-(IV) derivatives was deduced from both the γ-effect in t
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7

V, Vijay, Manjusha V. Karkhelikar, B. Sridhar, Nedaossadat Mirzadeh, Suresh Bhargava, and Pravin R. Likhar. "Electronically modified amine substituted alkynols for regio-selective synthesis of dihydrofuran derivatives." Organic & Biomolecular Chemistry 14, no. 1 (2016): 288–95. http://dx.doi.org/10.1039/c5ob02033f.

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Geibel, Irina, Marc Schmidtmann, and Jens Christoffers. "Cerium-catalyzed, oxidative synthesis of annulated, tetrasubstituted dihydrofuran-derivatives." Organic & Biomolecular Chemistry 15, no. 37 (2017): 7824–29. http://dx.doi.org/10.1039/c7ob01904a.

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9

Shi, Taoda, Shenghan Teng, Yajie Wei, Xin Guo та Wenhao Hu. "Synthesis of spiro[2,3-dihydrofuran-3,3′-oxindole] derivatives via a multi-component cascade reaction of α-diazo esters, water, isatins and malononitrile/ethyl cyanoacetate". Green Chemistry 21, № 18 (2019): 4936–40. http://dx.doi.org/10.1039/c9gc01751h.

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Chen, Zi-cong, Lang Tong, Zhi-bo Du та ін. "Annulation of β-naphthols and 4-hydroxycoumarins with vinylsulfonium salts: synthesis of dihydrofuran derivatives". Organic & Biomolecular Chemistry 16, № 15 (2018): 2634–38. http://dx.doi.org/10.1039/c8ob00293b.

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Dissertations / Theses on the topic "Dihydrofurane derivatives"

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Findik, Hamide. "Potassium Permanganate/ Carboxylic Acid/ Organic Solvent: A Powerful Reagent For C-c Bond Formation, Aryl Coupling Reactions And Enone Oxidation Ipso-nitration Of Arylboronic Acids With Silver Nitrite/ Tmscl." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610472/index.pdf.

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The first part of the thesis presents the KMnO4/ carboxylic acid/ organic solvent which is a powerful reagent for C-C bond formation, aryl coupling reactions and enone oxidation. The a&cent<br>-acetoxylation of enones and the a-acetoxylation of aromatic ketones were carried out with potassium permanganate and acetic acid, in which acetoxylation products were obtained in 74-96% yields. The same reaction was carried out with carboxylic acids other than acetic acid, which furnished corresponding acyloxy ketones with the same regioselectivity. For the first time, formyloxylation products were synt
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2

Demirci, Sema. "Synthesis Of Heteroaryl Substituted Dihydrofuran And Dihydropyran Derivatives By Green Chemistry Approach." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610966/index.pdf.

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The thesis subject is mainly involved in Green Chemistry approach. Thiophene, furan and pyridine carboxaldehydes were chosen as starting compounds and vinylation and allylation with Grignard reaction afforded the corresponding racemic heteroaryl substituted allylic and homoallylic alcohols. Subsequent resolution with enzymes (PS-Amano II, Lipozym and Novazym 435) gave enantiomerically enriched alcohols with the e.e. values varied between 65 and 99%. The absolute configurations of all substrates are known. As a result of O-allylation with the common procedure formed the feasible carbon backbone
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Book chapters on the topic "Dihydrofurane derivatives"

1

Kollenz, G., and S. Ebner. "Of Ethyl 4,5-Dioxo-2-phenyl-4,5-dihydrofuran-3-carboxylate." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00304.

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Kollenz, G., and S. Ebner. "Flash-Vacuum Pyrolysis of Methyl 2--Butyl-4,5-dioxo-4,5-dihydrofuran-3-carboxylate." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00301.

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3

George, D. M., and R. L. Danheiser. "Trapping of Lithium 2-Lithioacetylen-1-olate Generated from 2-Phenyl-2,3-dihydrofurans or 3-Phenylisoxazoles." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00051.

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Conference papers on the topic "Dihydrofurane derivatives"

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Monteiro, Alex, Marcus Scotti, and Luciana Scotti. "MOLECULAR MODELING OF NUCLEOTIDE DERIVATIVES OF 2.5-DIHYDROFURAN-2,5-DIOL FOR EVALUATION OF POTENTIAL ANTITUBERCULAR ACTIVITY." In MOL2NET 2018, International Conference on Multidisciplinary Sciences, 4th edition. MDPI, 2018. http://dx.doi.org/10.3390/mol2net-04-05917.

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