Journal
CHEMISTRY OF HETEROCYCLIC COMPOUNDS
Volume 45, Issue 8, Pages 965-969Publisher
SPRINGER
DOI: 10.1007/s10593-009-0364-x
Keywords
2-aminobenzoylhydrazones; benzo-1,3,4-triazepines; 1,2-dihydroquinazolin-4(3H)-ones; ring-chain tautomerism
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The isomeric transition of 2-aminobenzoylhydrazones of aliphatic aldehydes 2-H2NC6H4CONHN=CHAlk (Alk = Me, Et, Pr, Bu) in chloroform-d(1) solution into the cyclic 1,2-dihydroquinazolin-4-one form has been studied. The structure of the obtained compounds was demonstrated by methods of H-1 and C-13 NMR spectroscopy.
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