Journal
SYNLETT
Volume 28, Issue 10, Pages 1173-1176Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0036-1558965
Keywords
triphenylammonium tricyanomethanide; imidazopyridines; nanostructured molten salt; aldehydes; pyridinamine; organocatalysis
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Funding
- Bu-Ali Sina University [BN093]
- Iran National Science Foundation (INSF) [BN093]
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Triphenylammonium tricyanomethanide (Ph3NH)[C(CN)3] was synthesized and used as an efficient and recyclable nanostructured molten-salt (NMS) catalyst for the synthesis of N-benzylidene-2-arylimidazo[1,2-a] pyridin-3-amines by the reaction of various (het) aryl aldehydes with trimethylsilyl cyanide and pyridin-2-amine under solvent-free conditions at 50 degrees C. The NMS catalyst could be simply recycled and reused several times without significant loss of its catalytic activity.
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