Studies on Diazabenzobicyclo-[3.3.1]nonane System. V. Nuclear Magnetic Resonance Spectral Studies on Diazabenzobicyclo[3.3.1]nonane System

Abstract

The interpretation of the nuclear magnetic resonance spectra of some derivatives of 3, 4-dihydro-2H, 6H-1, 5-methanobenzo[b][1, 5]diazocine (II) and 1, 2, 3, 4, 5, 6-hexahydro-1, 5-methanobenzo[e][1, 3]diazocine (V) suggested that ring C in diazabenzobicyclo[3.3.1]nonane system takes a chair form. The structures of monomethiodides of 3, 11-dimethyl-8-methyoxy-1, 2, 3, 4, 5, 6-hexahydro-imino-3-benzazocine (IIIa), 2-ethyl-(IVa) and 2-methyl-1, 2, 3, 4-tetrahydro-1, 5-methanobenzo[f][1, 4]diazocine (IVb) were also determined by the examination of the nuclear magnetic resonance spectra of them.