The 9th International Electronic Conference on Synthetic Organic Chemistry
Part of the Electronic Conference on Synthetic Organic Chemistry series
1–30 Nov 2005
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Welcome from the Chairs
Call for Papers
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 can be prepared in exactly the same way as for any traditional conference where research results can be presented. Slides should be converted to PDF format before submission.
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 (98)
Id | Title | Authors | Poster PDF | ||||||||||||||||||||||||||||||||||||||
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sciforum-000580 |
Thiosemicarbazones of Acetylpyrazines: Preparation and Their Hydrophobic Properties
, Veronika Opletalova ,
Tatjana Grafnetterova ,
Jiri Dohnal
Submitted: 31 Oct 2005 Abstract: Show Abstract |
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Veronika Opletalova ,
Tatjana Grafnetterova ,
Jiri Dohnal
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N/A |
Show Abstract |
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Some substituted acetylpyrazine derivatives were prepared as the starting materials for the subsequent synthesis of thiosemicarbazones. General synthetic approach of all newly synthesized compounds is presented. All the thiosemicarbazone derivatives of acetylpyrazines were analyzed using the reversed phase high performance liquid chromatography (RP-HPLC) method for the lipophilicity measurement. The procedure was performed under isocratic conditions with methanol as an organic modifier in the mobile phase using end-capped non-polar C18 stationary RP column. In the present study the correlation between RP-HPLC retention parameter Log K (the logarithm of capacity factor K) and various calculated Log P values is shown. The relationships between the lipophilicity and the chemical structure of the studied compounds are discussed as well. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000583 | Synthetic Approaches to Bis-Peptides Attached on Polynorbornane Molecular Scaffolds with Well-Defined Relative Positions and Distances |
Muhong Shang ,
Ronald Warrener ,
Douglas Butler ,
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N/A |
Show Abstract |
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This paper describes novel synthetic approaches to polynorbornane molecular scaffolds substituted with peptides at various, well-defined positions. A library of norbornene building blocks with attached peptides was prepared. Alkene cyclobutane epoxide (ACE) coupling method was used as a key step reaction for connecting of two norbornene building blocks into bis-peptide scaffolds. Photodimerization of cyclobutene diesters offers alternative route to polynorbornane bis-peptides. Pyrrolo-peptides were used for preparation of peptide substituted 7-aza norbornenes. Unsymmetrical bis-peptide scaffolds were prepared by ACE coupling of peptide-norbornane epoxide with another norbornene-peptide block. Chemical elaboration of bridgehead dimethyl esters of ACE products or epoxide ACE reagents was also used for peptide attachment. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000584 | Synthesis and Mesomorphism of Novel Triphenylene-Based Discotic Liquid Crystals with Chiral Peripheral Chains |
Fu-Jing Yuan ,
Bi-Qin Wang ,
Ping Hu ,
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N/A |
Show Abstract |
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Symmetrical and asymmetrical triphenylene-based discotic liquid crystals with mixed ether-ester peripheral chains, the ester ones with a chiral carbon [ abbreviated as sym-TP(OCnH2n+1)3(OOCC*HClCH2CHMe2)3 and asym-TP(OCnH2n+1)3(OOCC*HClCH2CHMe2)3, n = 4 ~ 8,11 ] were synthesized. The phase transition temperature and the liquid crystal states were determined with polarized optical microscopy (POM) and differential scanning calorimetry (DSC). It was found that the symmetrical isomers have lower clearing points. Some of the discogens show as many as three kinds of columnar mesophases. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000585 | Substituted Pyridopyrimidinones. 1. Convenient PTC Alkylation and Halogenation of 2-Hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one |
,
Aisha Mayas
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N/A |
Show Abstract |
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Alkyaltion of 2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one (1) was investigated under solid-liquid phase transfer catalysis conditions (PTC), using tetrabutylammonium bromide and potassium carbonate. The reaction with alkyl halides led to the formation of various 2-alkoxy products, in fair yields. Reaction of compound 1 with epichlorohydrin and chloroacetonitrile, under the same PTC conditions, afforded novel O1,O3-disubstituted glycerol and oxazolo-pyridopyrimidone betain derivatives, respectively. Some 3-halo-, 3,3-dihalo and/or 2,3-dihalopyrido[1,2-a]pyrimidines were also prepared using different halogenating agents at different reaction conditions. | |||||||||||||||||||||||||||||||||||||||||
sciforum-000586 | Reactions of 5-aminopyrazole with Active Methylene Compounds:Synthesis of Pyrazolo[3,4-b]pyridine Derivatives |
Naresh Badgujar ,
Nilambari Yewalkar ,
Madhukar Jachak
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N/A |
Show Abstract |
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A series of pyrazolo[3,4-b]pyridine derivatives was synthesized by knoevenagel condensation of 5-aminopyrazoles aroylacetonitriles and triethyl/methylorthoesters and also by Conrad-limpach reaction of 5-aminopyrazole and ß-keto esters. |
List of Authors (90)
Proceedings & Editors
A. General Organic Synthesis
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B. Solid Phase Chemistry and Combinatorial Synthesis
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C. Bioorganic Chemistry and Natural Products
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D. Symposium on Selenium and Tellurium Chemistry
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E. Symposium on Microwave Assisted Synthesis
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F. Supramolecular Chemistry
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G. Computational Chemistry
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