Abstract
Four photochromic 5-acetyl-substituted indolinospirochromenes were synthesized. The introduction of an acetyl group does not change the spectral characteristics of the merocyanine form but leads to a decrease in the efficiency of photocoloring.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1654–1658, December, 1979
Original article submitted January 9, 1979.
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Gal'bershtam, M.A., Bondarenko, E.M., Khrolova, O.R. et al. Synthesis and photochromic properties of 5-acetyl-substituted indolinospirochromenes. Chem Heterocycl Compd 15, 1329–1333 (1979). https://doi.org/10.1007/BF00514737
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DOI: https://doi.org/10.1007/BF00514737