Synthesis and antimicrobial activity of new azomethines synthesized from 4-formyl-1-phenyl-3-aryl(heteryl)pyrazoles
作者:M. K. Bratenko、I. I. Sidorchuk、M. V. Khalaturnik、M. V. Vovk
DOI:10.1007/bf02508112
日期:1999.2
(1540 - 1590 cm- i). The IR spectra of ethyl esters are characterized by a shift of the bands of C=O vibrations to 1740 - 1750 cm- z and by the vanishing of absorption bands belonging to the OH groups. The spectra of compounds Illr- IIIt containing coumaryl substituents show additional absorption bands of the C=O bonds at 1740 cm- I. The IH NMR spectra of compounds Ilia and llIn contain singlet signals