X-Ray crystal structure of the novel bis-quaternary dispiro system obtained from the reaction of morpholine with hexakis(bromomethyl)benzene

Abstract

In contrast to the six-fold substitution of hexakis(bromomethyl)benzene (Ia) by aniline to give the hexa-amine (Ib), reaction of (Ia) with morpholine occurs with dispiro-annelation yielding (II); the structure of this novel product was deduced spectroscopically and its detailed molecular geometry was determined by X-ray crystallography.