The 16th International Electronic Conference on Synthetic Organic Chemistry
Part of the Electronic Conference on Synthetic Organic Chemistry series
1–30 Nov 2012
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Call for Papers
The 16th International Electronic Conference on Synthetic Organic Chemistry (ECSOC-16) will run from 1 - 30 November 2012. ECSOC-16 Proceedings will be published later online and as a CD-ROM edition. Posters presented at ECSOC-16 may be considered as preliminary communications of new research results or review papers and may be published in another form later in any standard journal. At the authors discretion, contributions will be removed from the web-site after the end of the conference and not included in the online and CD-ROM proceedings editions. Authors are invited to publish their papers subsequently in Molecules.
Conference Chairs
julioa.seijas@usc.es
Instructions for Authors
Authors are encouraged to preare a couple of slides in PowerPoint or similar software, to be displayed online along with the Communication. Slides, if available, will be displayed directly in the website using Sciforum.net's proprietary slides viewer. Slides can be prepared in exactly the same way as for any traditional conference where research results can be presented. Slides should be converted to the PDF format before submission so that our process can easily and automatically convert them for online displaying.
Submissions should be done by the authors online by registering with www.sciforum.net, and using the "New Submission" function once logged into system.
MDPI AG, the publisher of the Sciforum.net platform, is an open access publisher. We believe that authors should retain the copyright to their scholarly works. Hence, by submitting a Communication paper to this conference, you retain the copyright of your paper, but you grant MDPI AG the non-exclusive right to publish this paper online on the Sciforum.net platform. This means you can easily submit your paper to any scientific journal at a later stage and transfer the copyright to its publisher (if required by that publisher).
List of accepted submissions (110)
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sciforum-002721 | The Influence of Maintenance Liquids\' Absorbence Used in the Automotive Industry on the Mechanical Properties of Polyamide-6/Montmorillonite Nanocomposites | , | N/A |
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In the present work, an upper limit of absorbance of demineralized water, antifreeze, windscreen washer fluid, brake fluid, gasoline and 15 wt% saline solution, on the polyamide-6 nanocomposites\' samples containing 3 wt% montmorillonite (PA-6 / MMT) was determined. The results were compared to the values obtained for pure nylon-6. The comparison allowed to evaluate the applicability of PA-6/MMT nanomaterials with potentially improved barrier properties for creating applications used in the automotive industry. | |||||||||||||||||||||||||||||||||||||||||
sciforum-002814 | Synthesis of B-carboline Derivatives |
césar Bernardo ,
Ana Olival ,
António Ribeiro ,
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,
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N/A |
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b-Carboline (BC) alkaloids represent a number of natural and synthetic compounds, which are associated with a vast spectrum of pharmacological properties.1 The Pictet-Spengler condensation is commonly used to synthesize tetrahydro-b-carbolines (THC). Some groups2 describe a sequence of Pictet-Spengler condensation followed by oxidation, without the isolation of the intermediate THC, to prepare the BC. Using the above sequence several BC were obtained in medium yields. The synthesis started from tryptophan (Trp), tryptophan methyl ester (TrpMe), and 2-amino-3-(1H-indol-3-yl)-propionic acid prop-2-ynyl ester and used 3,4-dimethoxy benzaldehyde (Dmb), or ethanal, followed by oxidation with KMnO4. From Trp, and Dmb the decarboxylated BC was obtained. From TrpMe and Dmb, the methyl ester of a BC was formed. A similar sequence with ethanal, gave an ester that was hydrolysed to theacid, which reacted with a glucosylamine under peptide conditions giving the amide, in low yield. From Boc-Trp the alkynyl derivative was prepared and the Pictet-Spengler reaction with ethanal gave the BC alkynyl ester. This was used for the click reaction3 with an azide, produced in situ from treatment of a-acetobromoglucose with sodium azide. The final compound was obtained as an oil in good yield. Thanks to FCT, Portugal for financial support to the NMR portuguese network (PTNMR, Bruker Avance III 400-Univ. Minho) and to FCT and FEDER -COMPETE-QREN-EU for financial support to the Research Centre, CQ/UM [PEst-C/QUI/UI0686/2011 (FCOMP-01-0124-FEDER-022716)] 1. R, Cao, et al, Curr Med Chem. 2007. 14, 479-500 2. B. Wu, et al, Eur. J. Med. Chem.. 2009. 44, 533-540 3. M. Silva, J. C.O. Gonçalves, A. M.F. Oliveira-Campos, L. M. Rodrigues, A. P. Esteves, Synth. Commun. DOI:10.1080/00397911.2011.637655 | |||||||||||||||||||||||||||||||||||||||||
sciforum-000098 | Epidermal Growth Factor Receptor (EGFR) Inhibitors for Tumor Anti-angiogenesis Activity | , , , | N/A |
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The EGFR family plays an essential role in normal organ development by mediating morphogenesis and differentiation through effects on cell proliferation, differentiation, apoptosis, invasion, and angiogenesis. Unlike normal cells that have tight regulatory mechanisms controlling EGFR pathways, tumor cells often have dysregulated EGFR signaling, allowing them to proliferate under adverse conditions, invade surrounding tissues, and increase angiogenesis. Epidermal growth factor receptor (EGFR) is a trans-membrane receptor tyrosine kinase that belongs to the Human epidermal receptor (HER) family of receptors. Receptor protein tyrosine kinases play a key role in signal transduction pathways that regulate cell division and differentiation. Among the growth factor receptor kinases that have been identified as being important in cancer is epidermal growth factor receptor (EGFR) kinase (also known as erb-B1 or HER-1) and the related human epidermal growth factor receptor HER-2 (also known as erbB-2). The quinazoline and other heterocyclic skeletons are of great importance to chemists as well as biologists as it is available in a large variety of naturally occurring compounds. In this article we are emphasizing on various hetericycles such as Quinazoline, pyrrolotriazines etc. as promising anticancer agents. These hetocycles showed the anticancer activity through the inhibition of EGFR enzyme. Attempt will be taken to provide details information on the said topic in the benefit of medicinal chemist. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000100 | Multi-walled Carbon Nanotubes Functionalized with a Palladium(II)-Schiff Base Complex: A Recyclable and Heterogeneous Catalyst for the Copper-, Phosphorous- and Solvent-free Synthesis of Ynones | , , | N/A |
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During the last decade, studies on the isolation, characterization and catalytic activity of functionalized carbon nanotubes (CNTs) received particular attention because of their specific catalytic applications compared to homogeneous catalysts. Schiff bases, which are an important class of ligands with extensive applications in different fields, showed excellent catalytic activity when grafted on CNTs.1 Conjugated alkynyl ketones, best known as ynones, have received considerable synthetic interest due to their occurrence in a wide variety of bioactive molecules and natural products.2 This class of compounds are synthesized through various reported methods.3 Some of the disadvantages of these protocols include high temperatures, long reaction times, use of air and moisture sensitive catalysts such as phosphorous containing catalysts, use of copper catalysts which are very much prone to form diyne side products, use of hazardous organic solvents, use of toxic carbon-monoxide gas and need of special instruments. In this work, we presented a solvent-, copper- and phosphorous-free cross-coupling reaction of terminal alkynes with acyl halides catalyzed by Pd-Schiff base@MWCNTs in the presence of triethylamine as base. The catalyst was reusable and air-stable which showed high activity for this simple, mild and green reaction with good to excellent yields of the product. References: [1] M. Salavati-Niasari, M. Bazarganipour, Appl. Surf. Sci. 2009, 255, 7610-7617. [2] C. A. Quesnelle, P. Gill, M. Dodier, D. St-Laurent, M. Serrano- Wu, A. Marinier, A. Martel, C. E. Mazzucco, T. M. Sticle, J. F. Barrett, D. M. Vyas, B. N. Balasubramanian, Bioorg. Med. Chem. Lett. 2003, 13, 519-524. [3] (a) Perrone, S.; Bona, F.; Troisi, L. Tetrahedron, 2011, 67, 7386; (b)Shen, Q.; Huang, W.; Wang, J.; Zhou, X. Organometallics,2008, 27, 301. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000101 | A Copper-, Phosphorous- and Solvent-free Coupling of Acyl Halides with Terminal Alkynes Catalyzed by Palladium-Cryptand-22 Complex under Aerobic Conditions |
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Mozhgan Navidi
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N/A |
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Ynones or α,β-acetylenic ketones are useful synthetic intermediates for the preparation of many biologically-active compounds and heterocyclic derivatives such as pyrroles, furanes, furanones, pyrazoles, and isoxazoles.1 Different methodologies for the preparation of α,β-acetylenic ketones have been reported in which various metals have been employed as catalysts.2 Unfortunately, there are several disadvantages that confine the utility of the given protocols. Namely, copper salts which are very much likely to form diynes have been used as a co-catalyst in many studies. Moreover, phosphorous containing ligands have made the reaction conditions harsher owing to the need of inert atmosphere such as argon and nitrogen. The use of hazardous organic solvents and high temperatures are also unfavorable. In this study, we have successfully demonstrated a solvent-, copper- and phosphorous-free cross-coupling reaction of terminal alkynes with acyl halides catalyzed by Pd-Cryptand-22 as catalyst. This catalyst was simply prepared and showed air and moisture stability. The reaction was performed at room temperature and under aerial conditions using triethylamine as base. The simple, mild and green procedure, short reaction times and moderate to excellent yields make this method well-suited for ynone synthesis. References: [1] (a) Zora, M.; Kivrak, A.; Yazici, C. J. Org. Chem. 2011, 76, 6726; (b) Karpov, A. S.;Merkul, E.; Oeser, T.;Muller, T. J. J. Eur. J. Org. Chem. 2006, 13, 2991. [2] Perrone, S.; Bona, F.; Troisi, L. Tetrahedron 2011, 67, 738. |
List of Authors (189)
Proceedings & Editors
A. General Organic Synthesis
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B. Bioorganic, Medicinal and Natural Products
B. Bioorganic, Medicinal and Natural Products
Covers papers where the molecules synthesized are of biological or medicinal interest, together with those which are natural products either they are isolated or synthesized.
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C. Microwave Assisted Synthesis
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D. Polymer and Supramolecular Chemistry
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E. Computational Chemistry
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