Photo-and thermochromic spiranes. 24. Novel photochromic spiropyrans from 2, 4-dihydroxyisophthalaldehyde

YS Alekseenko, BS Lukyanov, AN Utenyshev…

Index: Alekseenko; Lukyanov; Utenyshev; Mukhanov; Kletskii; Tkachev; Kravchenko; Minkin; Aldoshin Chemistry of Heterocyclic Compounds, 2006 , vol. 42, # 6 p. 803 - 812

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Citation Number: 5

Abstract

Abstract Novel series of photochromic indoline and benzoxazine spiropyrans containing ortho-placed formyl and hydroxyl groups in the benzene ring of the chromene part of the molecule have been prepared. X-ray analysis has shown that, depending on the structure of the heterocyclic component in the spiro cyclization reaction different, nonequivalent formyl groups of 2, 4-dihydroxyisophthalaldehyde can participate. The synthesized compounds ...