2. A new synthesis of substituted imidazo[4,5-b]pyridinones by reductive cyclisation of 4-nitro-1H-imidazol-5-yl di- and tri-carbonyl compounds George Tennant,Christopher J. Wallis,George W. Weaver J. Chem. Soc. Perkin Trans. 1 1999 629
6. Synthesis of 5-substituted imidazo[4,5-b]pyridinones by annelation of 4-amino-5-ethoxalyl-1H-imidazole derivatives with active methylene compounds George Tennant,Christopher J. Wallis,George W. Weaver J. Chem. Soc. Perkin Trans. 1 1999 827
7. Synthetic approaches to some aza-analogues of benzimidazole N-oxides. Part 1. The imidazo[4,5-b]pyridine series Adrian F. Andrews,David M. Smith,Harold F. Hodson,Peter B. Thorogood J. Chem. Soc. Perkin Trans. 1 1982 2995
10. Ground and excited state prototropic reactions in 2-(2′-methoxyphenyl)-3H?-imidazo[4,5-b]pyridine?? Somes K. Das,Sneh K. Dogra J. Chem. Soc. Perkin Trans. 2 1998 2765