Nano-silica supported acidic ionic liquid as an efficient catalyst for the multi-component synthesis of indazolophthalazine-triones and bis-indazolophthalazine-triones
- 2 July 2013
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Catalysis Science & Technology
- Vol. 3 (10), 2717-2722
- https://doi.org/10.1039/c3cy00344b
Abstract
A supported ionic liquid bearing sulfonic acid groups was synthesized by anchoring 3-sulfopropyl-1-(3-propyltrimethoxysilane)imidazolium hydrogen sulfate onto nano-silica and characterized by FT-IR spectroscopy, elemental analysis and scanning electron microscopy (SEM) techniques. This catalyst was used for the efficient one-pot multi-component synthesis of indazolophthalazine-triones and bis-indazolophthalazine-triones. Moreover, the catalyst could be reused at least seven times without any significant loss of activity.Keywords
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