The Malaysian Journal of Analytical Sciences Vol 11 No 1 (2007): 229 – 236

 

 

SYNTHESIS AND FLUORESCENCE CHARACTERISTIC OF

2-N-ANILINOPYRIDINE AND 3-N-ANILINOPYRIDINE

 

Noordini Mohd Salleh, Liow Pei Ling, Zanariah Abdullah,

Maizathul Akmam A. Bakar and Zaharah Aiyub

 

Department of Chemistry, Faculty of Science, University of Malaya,

50603 Kuala Lumpur

 

Abstract

2-N-Anilinopyridine  and  3-N-anilinopyridine  were  obtained  when  aniline  was  refluxed  with  2-chloropyridine  and  3- chloropyridine, respectively. The structures of both compounds were confirmed by ¹H NMR, ¹³C NMR, infra red and mass spectrometries.   Fluorescence studies of these compounds were carried  out in various solvents and 2-N-anilinopyridine showed the highest fluorescence peak at 368 nm, when excited at 339 nm in tetrahydrofuran. 3-N-anilinopyridine showed the highest fluorescence peak in acetonitrile when excited at 245 nm. The fluorescence peak was recorded at 328 nm. Both N-anilino pyridines showed a  decreased in fluorescence intensity in other solvents such as ethyl acetate and ethanol. Fluorescence peak was also reduced with time in capped and uncapped conditions. For uncapped condition, the presence of oxygen is believed to be responsible in reducing the fluorescence intensity of both compounds studied through quenching effect.

 

Keywords: 2-N-Anilinopyridine, 3-N-Anilinopyridine, Fluorescence

 

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