Chemical Research Letters, May 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. Which mentioned a new discovery about Formula: C8H9NO2, Formula: C8H9NO2
1-and 3-Substituted imidazo[4,5-b]pyridin-2-ones were synthesized by heating equimolar amounts of 3-amino-2-chloropyridine or 2-chloro-3- methylaminopyridine, urea, and the corresponding arylamine at 150-210C. The reaction of 3-amino-2-chloropyridine with urea and p-phenylenediamine or p,p?-diaminobiphenyl at a ratio of 2:2:1 under analogous conditions gave 1,4-bis-(2-oxoimidazo[4,5-b]pyridin-3-yl)benzene or 1,4-bis(2-oxoimidazo[4,5-b] pyridin-3-yl)biphenyl, respectively. Pleiades Publishing, Inc., 2006.
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