64001-50-9Relevant academic research and scientific papers
STUDY OF AMINO-IMINO TAUTOMERISM IN DERIVATIVES OF 2-, 4- AND 6-AMINONICOTINIC ACID
Snrckova, Stavata,Juricova, Kristina,Prutianov, Viktor
, p. 2057 - 2068 (1994)
13C NMR spectra of p-nitrobenzoyl 2-, 4-, and 6-aminopyridine-3-carboxylates, their hydrochlorides, trifluoroacetates and 1-benzyl derivatives were studied.As found from the chemical shifts of pyridine carbon atoms C-2, C-4 and C-6, the free bases exist i
