Abstract
Polymer-supported heterogeneous catalysts in form of complexes of poly[bis(pyridine-2-oxy)phosphazene] with cobalt(II) or copper(II) acetate were synthesized. The catalysts were prepared by a three-step reaction procedure. First, poly(dichlorophosphazene) was synthesized by thermal polymerization of cyclic trimer of hexachlorocyclotriphosphazene. In the second stage, the poly(dichlorophosphazene) structure was converted into the 2-hydroxypyridine by a nucleophilic substitution reaction. The last stage of the catalyst synthesis was the reaction of poly[bis(pyridine-2-oxy)phosphazene] with cobalt acetate or copper acetate. FTIR, 31P NMR, AAS, BET, SEM, SEM-EDS and TG were employed for characterization of the obtained catalysts. The complexes were applied as heterogeneous catalysts in oxidation of dodecene, indene, limonene in the presence of molecular oxygen in acetonitrile (as solvent) at 60°C, using isobutyraldehyde as an “oxygen transfer” agent. Oxidation reactions of aliphatic and aromatic hydrocarbons let to formation of epoxides or ketones with good yield and high selectivity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
