Abstract
Two photochromic indoline spirochromenes were synthesized. The introduction of a phenyl group into the 6 or 8 position causes a bathochromic shift of the bands in the electronic absorption spectrum of the merocyanine form.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 943–945, July, 1974.
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Braude, E.V., Gal'bershtam, M.A. Synthesis and spectral characteristics of photochromic 6- and 8-phenyl- substituted indoline spirochromenes. Chem Heterocycl Compd 10, 823–825 (1974). https://doi.org/10.1007/BF00471364
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DOI: https://doi.org/10.1007/BF00471364