Synthesis of 3-(Cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8- carboxylic Acids Via an Efficient Three-component Condensation Reaction between Cyclohexylisocyanide and 2-Aminopyridine-3-carboxylic Acid in the Presence of Aromatic Aldehyde

Author(s): Ghasem Marandi*.

Journal Name: Combinatorial Chemistry & High Throughput Screening

Volume 21 , Issue 4 , 2018

Abstract:

Aim and Objective: The reaction of cyclohexylisocyanide and 2-aminopyridine-3- carboxylic acid in the presence of benzaldehyde derivatives in ethanol led to 3-(cyclohexylamino)-2- arylimidazo[1,2-a]pyridine-8-carboxylic acids in high yields. In a three component condensation reaction, isocyanide reacts with 2-aminopyridine-3-carboxylic acid and aromatic aldehydes without any prior activation.

Material and Methods: The synthesized products have stable structures which have been characterized by IR, 1H, 13C and Mass spectroscopy as well as CHN-O analysis.

Results: In continuation of our attempts to develop simple one-pot routes for the synthesis of 3- (cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8-carboxylic acids, aromatic aldehydes with divers substituted show a high performance.

Conclusion: In conclusion, this study introduces the art of combinatorial chemistry using a simple one-pot procedure for the synthesis of new materials which are interesting compounds in medicinal and biological sciences.

Keywords: Cylohexylisocyanide, benzaldehyde derivatives, three component condensation reaction, 2-aminopyridine-3- carboxylic acid, 3-(cyclohexylamino)-2-arylimidazo[1, 2-a]pyridine-8-carboxylic acid.

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Article Details

VOLUME: 21
ISSUE: 4
Year: 2018
Page: [298 - 301]
Pages: 4
DOI: 10.2174/1386207321666180416153112
Price: $58

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