Abstract
Nano kaolin-SO3H as a new reusable and green heterogeneous catalyst was prepared by reaction of kaolin nanoparticles with chlorosulfonic acid. This new type of solid acid which contains the properties of a Lewis acid (Al3+) and a Bronsted acid (SO3H group), was characterized by FT-IR, XRD, SEM, TEM, XRF, EDS and TGA. Nano kaolin-SO3H was used as a recoverable acidic heterogeneous catalyst for one-pot synthesis of 2,4,5-trisubstituted imidazoles via three component condensation of 1,2-diketones, various aromatic aldehydes and ammonium acetate. Short reaction time, simple work-up, high yields, solvent-free conditions and environmental friendly catalyst are some advantages of this protocol.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.