I. Iriepa, B. Gil-Alberdi, E. Gálvez
Jun 1, 1997
Citations
0
Influential Citations
4
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract A series of ureas derived from 3-methyl-2,4-diphenyl-3-azabicyclo[3.3.1]nonan-9 β -amine were synthesized and studied by IR, Raman, 1 H and 13 C NMR spectroscopy. These compounds adopt in CDCl 3 a preferred flattened chair–chair conformation with the cyclohexane ring more flattened than the piperidine moiety, and the N–CH 3 groups in equatorial position. IR and 1 H and 13 C NMR data show the presence of at least two conformations at the urea unity. These results are supported by molecular modelling studies.