Na2S2O4: A versatile reagent for the one-pot synthesis of 2-aryl-1h-imidazo[4,5-c]pyridines from 4-amino-3- nitropyridine and aldehydes via reductive cyclization
A highly efficient and versatile method for the synthesis of 2-aryl-1H-imidazo[4,5-c]pyridines 3 was achieved in one step via reductive cyclization of 4-amino-3-nitro-pyridines 4 with aromatic aldehydes in the presence of Na2S2O
Dubey,Chowdary,Ramesh,Reddy, P. V. V. Prasada
p. 697 - 708
(2011/03/19)
Synthetic utility of catalytic Fe(III)/Fe(II) redox cycling towards fused heterocycles: A facile access to substituted benzimidazole, bis-benzimidazole and imidazopyridine derivatives
A catalytic Fe(III)/Fe(II) redox cycling approach has been examined and applied towards synthesis of a wide range of benzimidazole, bis-benzimidazole and imidazopyridine derivatives from oxidative coupling of aromatic ortho-diamines with aromatic as well
Singh,Sasmal,Lu,Chatterjee
p. 1380 - 1390
(2007/10/03)
PREPARATION OF 2-ARYL-SUBSTITUTED IMIDAZOPYRIDINES AND IMIDAZOPYRIDINES
It is proposed that sulfur be used as the oxidizing agent in the synthesis of 2-arylimidazopyridines from o-diaminopyridines and aromatic (heteroaromatic) aldehydes.Benzyl alcohols and benzylpyridinium salts can be used in place of aldehydes. 2-Phenylimid
Yutilov, Yu. M.,Shcherbina, L. I.
p. 529 - 535
(2007/10/02)
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