J. Anusuya

Annamalai University , Annāmalainagar, State of Tamil Nadu, India

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Publications (2)0.92 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Five 4-dicyanomethylene derivatives 6–10, N-cyanoacetyl-cis-2,6-diphenylpiperidin-4-one 11 and 4-cyano(ethoxycarbonyl)-methylene-cis-2,6-bis(o-chlorophenyl)piperidine 12 were synthesised by condensing the appropriate piperidin-4-ones 13–17 with malononitrile/ethylcyanoacetate and their 1H and 13C NMR spectra were recorded. The 1H-1H COSY spectrum for 6 and NOESY spectra for 8, 10, and 11 were also recorded. Based on coupling constants and the results obtained from NOESY spectra boat conformation for 10 and epimerised chair conformations for 8 and 9 have been proposed. Other derivatives adopt normal chair conformations. Theoretical calculations and the 1H and 13C chemical shifts also support the above conformations. Mass spectra were also recorded for 6–12.
    Journal of Structural Chemistry 01/2008; 49(3):448-458. · 0.58 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the title molecule, C22H20N2O2S, the tetrahydrothiopyran ring adopts a chair conformation. The dicyanomethylene group and the 4-methoxyphenyl groups have equatorial orientations. A crystallographic mirror plane bisects the molecule, passing through the S and opposite C atoms of the central ring.
    Acta Crystallographica Section E Structure Reports Online 01/2007; 63(10). · 0.35 Impact Factor