Synthesis of New Hydrazones Based on Functionalized Phosphaneoflavanones Containing an Aldehyde Group
摘要
Abstract
A series of new hydrazones was obtained by reacting phosphaneoflavanones containing an aldehyde group on the periphery with hydrazine derivatives (phenylhydrazine, benzohydrazide, nicotinic hydrazide, isonicotinic acid hydrazide). Composition and structure of all the prepared compounds were confirmed by 1H, 13С and 31P NMR, IR spectroscopy, mass spectrometry and X-ray structural analysis. Based on 1D/2D correlation NMR experiments, it was found that the resulting hydrazones exist only as E-isomer.