SYNTHESIS AND STRUCTURE OF SCHIFF BASES DERIVED FROM 3-FORMYL-4-HYDROXYCOUMARIN AND DIAMINES
DOI:
https://doi.org/10.1007/852Keywords:
3-formyl-4-hydroxycoumarin, enamines, E/Z isomerization, tautomerismAbstract
The mono- and diimine products from the condensation of 3-formyl-4-hydroxycoumarin and various diamines were synthesized. It was shown by 1H NMR and mass spectrometry that the obtained compounds in DMSO-d6 solution and in gas phase exist in the E- and Z-keto-enamine forms.
Authors: B. G. Milevskii, T. A. Chibisova, N. P. Solov'eva, O. S. Anisimova, V. S. Lebedev, I. V. Ivanov, and V. F. Traven
English Translation in Chemistry of Heterocyclic Compounds, 2013, 48 (12), pp 1781-1792