The rearrangement of hexahydro-(1H)-2-benzazoninium ylides in liquid ammonia yields a mixture of amines : metacyclophanes arise from Sommelet-Hauser transposition, alkenes from an Hofmann elimination, enamines from a process which is discussed here, and two other minor compounds from a Stevens shift. Dynamic NMR of azametacyclophanes will be discussed .
AbstractThe ammonia chemical ionization desorption spectra of N,N‐dimethyl quaternary ammonium iodides in addition to high protonated molecular ion [M + H]+ intensity, show signals for an ion radical composed of N‐methyl abstracted salt cation and ammonia [C + NH3CH3]+˙. These ions corresponding to the cation +2 show increased importance in the chemical ionization mode, using the same reagent gas. The technique of chemical ionization desorption appears suitable for the analysis of salts, and thus for the determination of the molecular weight of both anion and cation.
A Novel Ring Enlargement Involving the ortho Substitution Rearrangement by Means of Sodium Amide in Liquid Ammonia<sup>1</sup>