Abstract
The condensation of N-methyl(ethyl)-3,3-dimethyl-2-methylene-4-azaindoline with salicylic acid derivatives was used to synthesize thermo- and photochromic spirochromenes. The kinetics of the spontaneous decolorization of these compounds in ethanol and toluene were studied. The photosensitivity to UV rays of the 4-azaindoline spirochromes is greater by a factor of 1.5 than that of the indoline analogs.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1367–1369, October, 1982.
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Maisuradze, D.P., Akhobadze, S.A., Devadze, L.V. et al. Synthesis and physicochemical properties of some spirochromenes obtained on the basis of 4-azaindoline. Chem Heterocycl Compd 18, 1058–1060 (1982). https://doi.org/10.1007/BF00503195
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DOI: https://doi.org/10.1007/BF00503195