136261-03-5Relevant articles and documents
THE BENZOID-QUINOID TAUTOMERISM AZOMETHINES AND THEIR STRUCTURAL ANALOGS. XLVI. THE SYNTHESIS AND ISOMERIZATION OF HYDRAZONES OF 3-HYDROXY-2-ACETYL AND 3-HYDROXY-2-FORMYL DERIVATIVES OF BENZOFURAN, BENZOTHIOPHENE, AND 1-METHYLINDOLE
Shepelenko, E. N.,Dubonosov, A. D.,Bushkov, A. Ya.,Sitkina, L. M.,Bren', V. A.,et al.
, p. 1330 - 1333 (2007/10/02)
Syntheses are reported for N,N-disubstituted hydrazones of 3-hydroxy-2-acetylbenzofuran, 3-hydroxy-2-acetylbenzothiophene, and 3-hydroxy-1-methyl-2-formylindole.The benzofuran and benzothiohene derivatives, independently of the nature of the substituents in the amine component and medium, have ketoenehydrazine structure, while the indole derivatives exist in hydroxyhydrazone form.The ketoenehydrazine isomers undergo photoinitiated, thermally reversible (E)-(Z) isomerization upon irradiation at the long-wavelength absorption maximum.
