Bands in the region of 1500-1600 cm-1 were due to C=C stretching of aromatic nucleus (benzene ring).
Decrease in the peak intensities of C-O stretching vibration of aryl ether near 1250 cm-1 and C=C stretching of aromatic nucleus in the region of 1500-1600 cm-1.
Chemists and materials scientists explore synthesizing aromatic compounds with aromatization reactions mediated by transition metals, as an alternative to the conventional route of substitution reactions of the aromatic nucleus
It was established that beyond half of the elemental carbon is included into aromatic nucleus.
Visible adsorptions are qualitatively similar, and differences between these two objects can be seen only in quantitative characters of hydrogen substituents in aromatic nucleus.
6,184,417 B1: Bayer AG, Leverkusen, Germany, has patented a method for preparing acetophenones with a fiuoralkyl-substituted aromatic nucleus