Journal of the Chemical Society. Perkin transactions I p. 132 - 135 (1980)
Update date:2022-08-03
Topics:
Parrick, John
Wilcox, Russel
Kelly, Anthony H.
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 imidazo<1,2-a>pyridinium-8-carboxylate (23) are given.
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