Publications (2)0.58 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
- Acta Crystallographica Section E-structure Reports Online - ACTA CRYSTALLOGR E-STRUCT REP. 01/2007; 63(10).
Annāmalainagar, State of Tamil Nadu, India
- Department of Chemistry