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Solvent Free Conditions (solvent + free_condition)
Selected AbstractsChemInform Abstract: Synthesis of Some Heterocyclic Imides and Azomethine Derivatives under Solvent Free Condition and Their Antiinflammatory Activity Evaluation.CHEMINFORM, Issue 15 2010Sham M. Sondhi Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] A New Recyclable Ditribromide Reagent for Efficient Bromination under Solvent Free Condition.CHEMINFORM, Issue 43 2005Veerababurao Kavala Abstract For Abstract see ChemInform Abstract in Full Text. [source] Palladium-Catalyzed Addition of Disulfides and Diselenides to Alkynes under Solvent Free Conditions.CHEMINFORM, Issue 25 2004Valentine P. Ananikov Abstract For Abstract see ChemInform Abstract in Full Text. [source] Titanium Oxide (TiO2) Catalyzed One-Step Beckmann Rearrangement of Aldehydes and Ketones in Solvent Free Conditions.CHEMINFORM, Issue 37 2003Hashem Sharghi Abstract For Abstract see ChemInform Abstract in Full Text. [source] Chloro- or Bromo-trimethylsilane Induced Rapid and Quantitative Acid-Ester Conversion for Steroid Based Alcohols with Various Carboxylic Acids under Solvent Free Conditions.CHEMINFORM, Issue 24 2003Papori Goswami Abstract For Abstract see ChemInform Abstract in Full Text. [source] Microwave-enhanced Mannich Condensation of Terminal Alkynes, Primary Amines with Paraformaldehyde on Cuprous Iodide Doped Alumina under Solvent Free ConditionsCHINESE JOURNAL OF CHEMISTRY, Issue 6 2003Wang 'Lei Abstract A microwave-enhanced, solventless Mannich condensation of terminal alkynes, primary amines with paraformaldehyde on cuprous iodide doped alumina has been investigated. The structures of products depend on the ratio of alkyne to amine and paraformaldehyde. [source] Microwave-assisted synthesis of quinolone derivatives and related compoundsJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 5 2010Suhas Pednekar The Gould-Jacob type of reaction for the synthesis of ethyl 5-ethyl-8-oxo-5,8-dihydro-[1,3]-dioxolo[4,5-g]quinoline-7-carboxylate 4 has been carried out conventionally by the condensation between N -ethyl-3,4-methylenedioxyaniline 1 and diethyl ethoxymethylenemalonate 2 gave the unsaturated ester 3 and thermal cyclization in refluxing diphenyl oxide gave quinolone ethyl ester 4 and the results obtained were compared with single step microwave irradiation under solvent free conditions for the synthesis of 4. The esters on basic hydrolysis formed free acid 5, which, upon treatment with thionyl chloride gave the acid chloride 6. Treatment of acid chloride with o -phenylenediamine, hydrazine hydrate, ammonia, urea, and thiourea gave the amides (7,11). CS2 treatment in presence of KOH on 8 gave 12. We prepared 7,12 derivatives by conventional as well as microwave irradiation. These compounds have been characterized on the basis of IR, 1H NMR, MS, and elemental analysis. All the compounds prepared herein were screened for their antibacterial activity. Compounds 4, 5 possess promising antibacterial activity and compound 8 showed significant antibacterial activity. J. Heterocyclic Chem., (2010). [source] SnCl2 · 2H2O-catalyzed one-pot synthesis of 4(3H)-quinazolinones from anthranilic acid, ortho esters, and amines under solvent free conditionsJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 2 2010Min Wang A simple, efficient, and green procedure for the one-pot synthesis of 4(3H)-quinazolinones by three components condensation of anthranilic acid, ortho esters, and amines in the presence of SnCl2 · 2H2O has been developed. The reaction occurred within short reaction time at room temperature under solvent-free conditions to afford the title products in excellent yields. J. Heterocyclic Chem., (2010). [source] Barium nitrate catalyzed one pot synthesis of 1,4-dihydropyridines under solvent free conditions at room temperature ,JOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 3 2008Mukul Sharma Barium nitrate acts as an efficient catalyst for the three-component one pot synthesis of 1,4-dihydropyridines. Barium nitrate is a safe chemical, and reaction without the use of organic solvents makes the process eco-friendly. [source] | ||||||||||