INVESTIGATION OF COMPOUNDS RECEIVED ON THE BASE (2E, 4E)-1-(2-HIDROXI-5-METHILPHEYL)-5-FENIL-2,4-PENTADIEN-1-ON
Tautomerism of cyclohexenone derivatives of (2E, 4E)-1-(2-hydoxy-5-metylphenyl)-5-phenyl-2.4-pentadiene-1-on in solutions using NMR has been investigated. The results confirmed the formation of O–H···O type intramolecular hydrogen bonds, keto-enol tautomeric transitions in the (E)-6-acetyl-3-(2-hydroxy-5-metylphenyl)-5-styryl cyclohex-2-en-1-one. Possibility of the presence of keto-enol tautomerism in the investigated compound by chemical method also has been confirmed. Interaction between the (2E, 4E)-1-(2-hydoxy-5-metylphenyl)-5-phenyl-2.4-pentadiene-1-on and cyclopentanone also have been investigated.
Keywords : chalkon, acetylacetone, hydrogen bond, tautomerism
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