Enantiotropic Transformation of Carbethoxyhydrazones of Acetophenones
作者:E. A. Popova、O. V. Stepanova、V. V. Bessonov、G. D. Nepochatyi、L. M. Pevzner、M. L. Petrov
DOI:10.1134/s1070363220020243
日期:2020.2
AbstractHydrazinecarboxylates have been synthesized by reacting substituted acetophenones with carbethoxyhydrazine. One of product is formed as a mixture of E- and Z-isomers. In the process of measuring the melting point of the resulting hydrazinecarboxylates, a transition of one crystalline form to another has been detected. That process has been recorded on video in “time-laps” mode for one of the