Influence of substituent on UV absorption and keto–enol tautomerism equilibrium of dibenzoylmethane derivatives
作者:Jan Zawadiak、Marek Mrzyczek
DOI:10.1016/j.saa.2012.07.109
日期:2012.10
and nitro substituents in aromatic rings were collected. General influence of substituent on absorption maxima and absorption intensity was defined. Hyperchromic effects were observed for diketones with electron-donating groups in para postion. The keto-enol tautomerism equilibrium constant of obtained compounds was investigated with (1)H NMR spectroscopy. Significant changes of equilibrium were observed