The thermal decomposition of some N,N'-diarylethylenediamine hydrobromides

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Author
Sutherland, G. J.
Date
1961Permanent Link
http://hdl.handle.net/10092/8949Thesis Discipline
ChemistryDegree Grantor
University of CanterburyDegree Level
MastersDegree Name
Master of ScienceA few N,N’- diarylethylenediamines have been prepared, and decomposed with hydrogen bromide at elevated temperatures. An examination of the products has shown that the expected fused-ring heterocyclic compounds, e.g. indoline, are not formed; instead the main products are the corresponding 1,4-diphenylpiperazines and primary arylamines. Small quantities of other compounds have also been found. The significance of the various products has been discussed, and the total relevant evidence used in proposing a reaction scheme. The absence of fused-ring heterocyclics has been explained on steric and electronic grounds, and a comparison with syntheses of five-membered fused-ring compounds made.