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Microwave-Assisted Metal-Free Synthesis of 2,8-Diaryl-6-aminoimidazo-[1,2-a]pyridine via Amine-Triggered Benzannulation

Muthupandi Nagaraj, Muthusamy Boominathan, Shanmugam Muthusubramanian*, Nattamai Bhuvanesh

*Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India, Email:

M. Nagaraj, M. Boominathan, S. Muthusubramanian, N. Bhuvanesh, Synlett, 2012, 23, 1353-1357.

DOI: 10.1055/s-0031-1290979 (free Supporting Information)


An efficient microwave-assisted metal-free amino benzannulation of aryl(4-aryl-1-(prop-2-ynyl)-1H-imidazol-2-yl)methanone with dialkylamines affords various 2,8-diaryl-6-aminoimidazo[1,2-a]pyridines in good yield.

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Key Words

alkynes, amination, annulation, fused ring systems, heterocycles, imidazo[1,2-a]pyridines, microwave synthesis, green chemistry

ID: J60-Y2012-1790