Synthesis of Green/Blue Light Emitting Quinolines by Aza-D-A Reaction Using InCl 3 Catalyst

An efficient InCl -catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysical investigations of quinolines were carried out by abs...

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Bibliographic Details
Published in:Journal of fluorescence 2021-01, Vol.31 (1), p.247
Main Authors: Singh, Rajkumar Romeshkumar, Singh, Thokchom Prasanta, Singh, Ningthoujam Premananda, Naorem, Shanta Singh, Singh, Okram Mukherjee
Format: Article
Language:English
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Summary:An efficient InCl -catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysical investigations of quinolines were carried out by absorption and photoluminescence measurements. One particular compound 4 h having maximum intensity, emitting green colour (Φ = 0.78) with average life time of 6.20 ns was the best amongst the tested compounds. The presence of the amino group at the 4-aryl substituent of the quinoline backbone played an important role in executing the Povarov cyclization successfully and enhancing the flourescence properties of the newly synthesized quinolines.
ISSN:1573-4994
DOI:10.1007/s10895-020-02647-3