In addition, elongation of the C7C8 bond reveals that there is a clear trend for the H9 atom to approach N1, i.e. , to form 4a .
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Instability of 2,2-di(pyridin-2-yl)acetic acid. Tautomerization versus decarboxylation.
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In addition, elongation of the C7C8 bond reveals that there is a clear trend for the H9 atom to approach N1, i.e. , to form 4a .