One-Pot Synthesis and Structure Study of a New Indoline Spiropyran with Cationic Substituent
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A one-pot synthesis and structure study of a new salt spiropyran of the indoline series containing 2H-chromene vinyl-3H-indolium moiety as a substituent at the 8'-position are described. The structure was confirmed by 1H and 13C NMR and IR spectroscopy and high-resolution mass spectrometry. The single crystals of the compound were investigated by X-ray diffraction analysis. The structure was compared with the previously known isostructural analog.
This work was supported by the Ministry of Education and Science of the Russian Federation (State Contract, project no. 4.6088.2017/8.9), X-ray diffraction study was performed under State Contract no. 0089–2019–0011 (V.V. Tkachev, G.V. Shilov, and S.M. Aldoshin).
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