Journal of Molecular Structure p. 487 - 492 (1997)
Update date:2022-08-04
Topics:
Iriepa
Gil-Alberdi
Galvez
Bellanato
Carmona
A series of ureas derived from 3-methyl-2,4-diphenyl-3-azabicyclo[3.3.1]nonan-9α-amine were synthesized and studied by IR, Raman, 1H and 13C NMR spectroscopy. These compounds adopt, in CDCl3, a preferred flattened chair-chair conformation with the cyclohexane ring more flattened than the piperidine moiety and the N-CH3 groups in equatorial positions. IR and 1H and 13C NMR data show the presence of two conformations at the urea unity. These results are supported by molecular modeling studies.
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