Chemical Sciences: Recent submissions

  • Intramolecular Wittig reactions. A new synthesis of coumarins and 2-quinolones 
    Desai, V.G.; Shet, J.B.; Tilve, S.G.; Mali, R.S. (Journal of Chemical Research. 2003(10); 2003; 628-629.)
    o-Hydroxybenzaldehydes (1a-d) on reaction with chloroacetyl chloride in presence of pyridine followed by addition of triphenyl phosphine and base gave coumarins (2a-d). A similar sequence of reactions on o-aminoacetophen ...
  • Sodium metaperiodate oxidation of isocarvacrol 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K. (Journal of Chemical Research. 2003(7); 2003; 395-397.)
    Sodium metaperiodate oxidation of isocarvacrol 8, a monoterpene phenol has been found to give hydrothymoquinone 13, a natural product and a ring cleavage product 7-oxo-5-isopropyloct-3-en-2,5-olide 14.
  • UVA light-induced DNA cleavage by isomeric methylbenz[a]anthracenes 
    Dong, S.; Fu, P.P.; Shirsat, R.N.; Hwang, H.M.; Leszczynski, J.; Yu, H. (Chemical Research in Toxicology. 15(3); 2002; 400-407.)
    UVA light-induced DNA single strand cleavage by a set of 12 monomethyl substituted benz[a]anthracenes (MBAs) along with their parent compound, benz[a]anthracene (BA), and the potent carcinogen, 7,12-dimethylbenz[a]anthracene ...
  • A convenient one-pot synthesis of 4-methyl-3-phenyl-, 3-aryl- and 3-aryl-4-phenylcoumarins 
    Kamat, S.P.; D'Souza, A.M.; Paknikar, S.K.; Beauchamp, P.S. (Journal of Chemical Research. (5); 2002; 242-246.)
    Thermal condensation of 2'-hydroxyacetophenones 1a-e with phenylacetic acid 2a in refluxing diphenyl ether gives 4-methyl-3-phenylcoumarins 3a-e. Similarly, reaction of 2-hydroxybenzaldehydes 1f-m and 2-hydroxybenzophenones ...
  • Reaction of model sulphite oxidase with dimethylsulphite 
    Chaudhury, P.K.; Nagarajan, K.; Srinivasan, B.R.; Sarkar, S. (Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 41; 2002; 139-140.)
  • Ethylenediammonium tetrathiotungstate(VI) 
    Srinivasan, B.R.; Dhuri, S.N.; Naether, C.; Bensch, W. (Acta Crystallographica Section E-Structure Reports Online. 58; 2002; M622-M624.)
    The structure of the title complex, (C2H10N2)[WS4], consists of tetrahedral [WS4]2- anions which are connected to the organic ethylenediammonium dications via hydrogen bonding. All atoms are located in general positions.
  • Synthesis, characterization and thermal studies of magnesium (II) complexes of ortho and para-aminobenzoic acids 
    Srinivasan, B.R.; Sawant, S.C.; Dhuri, S.N. (Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 41(2); 2002; 290-296.)
    The reaction of magnesium carbonate with ortho or para-aminobenzoic acid results in the formation of the complexes [Mg(H2O)(6)](X)(2).2H(2)O (X=2-aminobenzoate (2-aba) 1 and X=4-aminobenzoate (4-aba) 2). The 2-aminobenzoate ...
  • Limnazine, the first bacterial azine derivative from Bacillus sp GW90a 
    Asolkar, R.N.; Kamat, V.P.; Wagner-Dobler, I.; Laatsch, H. (Journal of Natural Products. 65(11); 2002; 1664-1666.)
    A novel dimeric azine derivative designated as limnazine (1) has been isolated from the culture broth of an aquatic Bacillus sp.strain GW90a. The structure has been elucidated, on the basis of spectral data, as ...
  • Synthesis and x-ray structure characterization of ethylenediammonium tetrathiomolybdate 
    Srinivasan, B.R.; Vernekar, B.K.; Nagarajan, K. (Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 40(6); 2001; 563-567.)
    The passage of hydrogen sulphide gas into an aqueous ammonium heptamolybdate solution in the presence of ethylenediamine leads to the formation of stable ethylenediammonium tetrathiomolybdate 1 in good yields. The title ...
  • Selective catalytic reduction of nitric oxide with ammonia in presence of oxygen over Mn-ZSM5 
    Salker, A.V. (Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 40(3); 2001; 303-306.)
    Selective catalytic reduction of NO with NH3 in presence of oxygen with and without humid conditions has been studied over Mn-ZSM5 and H-ZSM5. The Mn-ZSM5 has been prepared by wet impregnation method, characterized by X-ray ...

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