A CP-MAS NMR study of n-alkanes included in urea: conformational dependences of the substituent effects for n-substituted alkanes

Conformational Studies of Some t(4)-Acet

Conformational Studies of Some t(4)-Acetoxy-r(2),c(6)-diphenyl-N-acetylpiperidines Using 1H NMR Spectra. Evidence for Contribution of Boat Forms with a Substituent in the Flagpole Position

✍ K. Pandiarajan; A. Manimekalai; N. Kalaiselvi 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 368 KB 👁 2 views

The NOESY spectrum and vicinal coupling constants of t(4)-acetoxy-3,3-dimethyl-r(2),c(6)-diphenyl-Nacetylpiperidine suggest that the compound adopts a chair conformation with axial phenyl groups. The vicinal coupling constants of t(4)-acetoxy-r(2),c(6)-diphenyl-N-acetylpiperidine could be accounted