Benzenoid-quinonoid tautomerism in azomethines and their structural analogs 45. 3-Hydroxy-2-acetyl-1-methylindole imines

Z/E(C=C)-isomerization of coumarin enamines induced by organic solvents

“…4,5 Heteroaromatic imines are well known for their ability to undergo solvent driven isomerizations. [6][7][8][9] The solvatochromic behaviour of coumarin derivatives is of special interest due to their prominent fluorescence potential. 10 Earlier, we have found some imines of 8-formyl-7-hydroxycoumarin to undergo E/Z-isomerization around the C=N bond followed by fluorescence modulation.…”