Synthesis of new condensed and cyclized coumarin derivatives
-
S. Dekić
,
V. Dekić
Abstract
Condensation of 4-chloro-2-oxo-2H-chromene-3-carbonitrile with selected heteroarylamines in acetonitrile containing a catalytic amount of triethylamine, followed by intramolecular cyclization, gave the new coumarin derivatives with yields ranging from 43 % to 78 %. The novel compounds were subjected to acid hydrolysis giving the corresponding oxo derivatives in 66–70 % yield. The structural assignments of the synthesized compounds were based on elemental, IR, 1H and 13C NMR analyses.
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© 2007 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- A review of methods for synthesis of nanostructured metals with emphasis on iron compounds
- Effect of selenium oxidation state on cadmium translocation in chamomile plants
- Optimization of ammonium nitrate concentration in single-stage continuous cultures of Aspergillus niger with biomass retention
- Behaviour of inorganic constituents of municipal sewage sludge during fluidized-bed combustion
- Profile distribution of As(III) and As(V) species in soil and groundwater in Bozanta area
- Structure of cyano-bridged Eu(III)—Co(III) bimetallic assembly and its application to photophysical verification of photomagnetic phenomenon
- Synthesis and characterization of oligo-4-[(pyridin-3-ylimino)methyl]phenol
- Relationship between physicochemical properties, lipophilicity parameters, and local anesthetic activity of dibasic esters of phenylcarbamic acid
- Improved DPPH determination for antioxidant activity spectrophotometric assay
- Notes on notation of sodium oxofluoroaluminate anions
- Determination of the enthalpy of fusion of Na3FeF6
- Controlled solvothermal synthesis of PbS quasi-nanorods by calix[4]arene
- Palladium-catalyzed heck and suzuki coupling in glycerol
- Synthesis of new condensed and cyclized coumarin derivatives
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