PHOTOCHROMIC AND THERMOCHROMIC SPIROPYRANS. 22. SPIROPYRANS OF THE 4-OXO-3,4-DIHYDRO-3H-1,3-BENZOXAZINE SERIES CONTAINING π-ACCEPTING SUBSTITUENTS AT POSITION 8'

Authors

  • А. О. Буланов Scientific-Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090
  • Б. Б. Сафоклов Institute of the Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow region
  • Б. С. Лукьянов Scientific-Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don
  • В. В. Ткачев Institute of the Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow region
  • В. И. Минкин Scientific-Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don
  • С. М. Алдошин Institute of the Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow region
  • Ю. С. Алексеенко Scientific-Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don

Keywords:

benzoxazinone, crystal solvate, spiropyran

Abstract

New spiropyrans of the benzoxazinone series were synthesized by modification of the formyl group in compounds containing an asymmetric spiro carbon atom. It was shown that 1H NMR identification of the spiropyrans containing π-accepting hydrazone substituents must be conducted at elevated temperatures by following the presence of and degree of subsequent "recovery". According to X-ray crystallographic analysis, crystal solvates can form, depending on the solvent used for crystallization of the hydrazones of the spiropyrans.

How to Cite
Bulanov, A. O.; Safoklov, B. B.; Luk'yanov, B. S.; Tkachev, V. V.; Minkin, V. I.; Aldoshin, S. M.; Alekseenko, Yu. S. Chem. Heterocycl. Compd. 2003, 39, 308. [Khim. Geterotsikl. Soedin. 2003, 350.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1023906608643

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Published

2003-03-25

Issue

No. 3 (2003)

Section

Original Papers