SYNTHESES AND UV SPECTRA OF SALICYLADEHYDE DERIVATIVES

来源期刊：中南大学学报(英文版)1998年第2期

论文作者：Tang Ruiren

文章页码：65 - 67

Key words：substituted strlrylsalicyladehyde derivatives; substituted effect; Witting reaction; UV spectra

Abstract: Nine 5-(β-substituted stylryl) salicyladehyde derivatives were prepared by PTC Witting reactions in the paper . The stereochemistry of the Witting reactions and the substituted effect on the UV spectra of salicyladehyde derivaties have been reported . It was observed that the spectra undergo a red shift as the conjugative effect of substituted becomes stronger . A good linear relationship between the shift of UV of p-substituted compounds and conjugation effect was obtained.It showed that the Hammett equation may be applied to the UV frequencies of the title compounds.