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- Title
Synthesis of spiropyran derivatives over 1-(carboxymethyl) pyridinium iodide as nanostructured pyridinium salt under aqueous media.
- Authors
Moosavi-Zare, Ahmad Reza; Zolfigol, Mohammad Ali; Salehi-Moratab, Rasoul; Noroozizadeh, Ehsan
- Abstract
In this work, acetic acid functionalized pyridinium salt, namely 1-(carboxymethyl)pyridinium iodide {[cmpy]I}, has been applied as reusable nanostructured catalyst for green, simple and efficient preparation of spiropyrans by the one-pot domino Knoevenagel-Michael-cyclization reaction of isatin derivatives or acenaphthenquinone, with malononitrile, and 1,3-dicarbonyl compounds under aqueous media. Moreover, 1H and 13C NMR, mass, CHN analysis, Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), thermal gravimetric analysis (TGA), differential thermal gravimetric (DTG), X-ray diffraction analysis (XRD), and calculation of crystallite size and interplaner distance of the catalyst have been studied.
- Subjects
SPIROPYRANS; ACETIC acid; PYRIDINIUM compounds; CARBOXYMETHYL compounds; ISATIN
- Publication
Canadian Journal of Chemistry, 2017, Vol 95, Issue 2, p194
- ISSN
0008-4042
- Publication type
Article
- DOI
10.1139/cjc-2016-0374