Studies on mesoionic compounds. IX. Synthesis of bicyclic mesoionic compounds.
نویسندگان
چکیده
منابع مشابه
Cardiovascular action of mesoionic compounds, 3-substituted sydnonimines.
1. Anesthetics Mongrel dogs of either sex, weighing from 6 to 13 kg, were anesthetized with sodium pentobarbital 30 mg/kg i.v. and supplemented with doses of 2.5 to 5 mg/kg i.v. whenever necessary during the experiment. Cats of either sex, weighing from 2 to 4.5 kg were anesthetized with chloralose (40 mg/kg i.v.) and urethane (250 mg/kg i.v. and 250 mg/kg i.p.), unless otherwise stated. 2. Blo...
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In order to have antibacterial, analgesic and anti-inflammatory activity in the same molecule, 4-[1-oxo-3- (substituted aryl)-2-propenyl]-3-(4-chlorophenyl) sydnones were synthesized by condensing 4-acetyl-3-(4-chlorophenyl)sydnone with various substituted aryl aldehydes and characterized by spectral studies; 4-acetyl-3-(4-chlorophenyl)sydnone itself, was prepared by acetylation of 3-(4-chlorop...
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Two salts of the mesoionic compounds 1,4-diphenyl-5-(5-nitro-2-furanyl)-1,3,4-thiadiazolium-2-thiol chloride (MC-1) and 4-phenyl-5-(5-nitro-2-furanyl)-1,3,4-thiadiazolium-2-phenylamine chloride (MC-2) were synthesized utilizing 1,4-diphenyl-thiosemicarbazide and 5-nitro-2-furoyl chloride as starting materials. Their structures were characterized by IR, ¹H-NMR, ¹³C-NMR and elemental analysis. Th...
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heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولMesoionic sydnone derivatives: An overview
Mesoionic compounds are dipolar five or six membered heterocyclic compounds in which both the negative and the positive charge are delocalized, for which a totally covalent structure cannot be written, and which cannot be represented satisfactorily by any one polar structure. The most important member of the mesoionic category of compounds is the sydnone ring system. Sydnones are mesoionic comp...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1979
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.27.1688