Über die Konstitution der ortho‐Oxyazokörper

Dipole Moments as a Tool in the Determination of Structure.

“…Nevertheless, the experiments of Sutton and Taylor have shown that measurements of dipole moments will give a valuable lead towards elucidating the configurational relationships in the oxime series and they have given final support to Meisenheimer's (127) thesis that in the Beckmann rearrangement of oximes exchange of /rans-substituents takes place, e.g., It would therefore be interesting to use this method also for the oximes of substituted benzalacetophenones and cinnamaldehydes. A discussion of the prevailing relationships by Auwers and coworkers from one side (5,6,8) and Blatt from the other side (37,38) has brought no final decision, which is all the more to be desired, as, on the basis of the pertaining facts, Auwers still raises some doubt as to the general validity of Meisenheimer's theory. In table 11a number of phenylhydrazones have been listed; some of them have been discussed by Jensen and Bak (102) without any final decision as to their configuration.…”