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3-Nitro-5-chloromethylsalicylaldehyde in the synthesis of photochromic spirochromenes of the indoline series

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The nitration of 5-chloromethylsalicylaldehyde leads to 3-nitro-5-chloromethylsalicylaldehyde, the chlorine atom in which is smoothly replaced by a hydroxy or acetoxy group. The salicylaldehydes obtained condense with 1,3,3-trimethyl-2-methylene-indoline to give the corresponding photochromic indolinespirochromenes. The spectral-kinetics of the photochromic transformations of the spirochromenes are discussed.

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Authors and Affiliations

  1. Scientific-Research Institute of Organic Intermediates and Dyes, 103787, Moscow

    E. V. Braude & M. A. Gal'bershtam

Authors
  1. E. V. Braude
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  2. M. A. Gal'bershtam
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 196–199, February, 1978.

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Braude, E.V., Gal'bershtam, M.A. 3-Nitro-5-chloromethylsalicylaldehyde in the synthesis of photochromic spirochromenes of the indoline series. Chem Heterocycl Compd 14, 153–156 (1978). https://doi.org/10.1007/BF00945328

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  • DOI: https://doi.org/10.1007/BF00945328

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