74149-49-8Relevant articles and documents
Diazaindenes (Azaindoles). Part 7. Formation of Imidazopyridinium-8-carboxylate in an Attempt to prepare Pyrrolopyridin-3-one
Parrick, John,Wilcox, Russel,Kelly, Anthony H.
, p. 132 - 135 (2007/10/02)
Attempts to obtain N-(3-carboxy-2-pyridyl)glycine (5) from 2-chloro-3-cyanopyridine are described.The ring-chain tautomerism of certain N-(2-pyridyl)aminoacetaldehydes is discussed.Three preparations of N-3-(carboxy-2-pyridyl)aminoacetaldehyde (20) and its cyclisation to the zwitterionic imidazopyridinium-8-carboxylate (23) are given.