Synthesis and Fluorescence properties of Schiff bas es of 4-hydroxy-3- methoxy-5-nitrobenzaldehyde

Vaniline (1) is nitrated by using known literature method to 4- hydroxy-3-methoxy-5-nitrobenzaldehyde (2) . The haloanilines (3a-g) used for the synthesis of Schiff bases was synthes ized by known literature methods and by referring Vogel’s Practical Organic Chemistry, 5 th Edition. The nitrovaniline is reactive towards ami ne and forming 4-{(E)-[(4-aryl)imine]methyl}-2-methoxy-6-nitrophen ol (4a-g) . The final compounds 4-{(E)-[(4-aryl)imine]methyl} 2-methoxy-6-nitrophenol (4a-g) and are further subjected to fluorescence study.