Single Site Supported Cationic Rhodium(I) Complexes for the Selective Redox Isomerization of Allylic Alcohols
2012 (English)In: ChemCatChem, ISSN 1867-3880, Vol. 4, no 2, 243-250 p.Article in journal (Refereed) Published
The isomerization of allylic alcohols to carbonyl compounds by a heterogeneous rhodium complex is reported. Different silica material supports and catalyst/ligand systems were evaluated. The most efficient catalyst in terms of catalytic activity and stability was found to be a cationic rhodium(I) complex with sulfonated phosphine ligands anchored on a mesoporous aluminosilica AlSBA-15. The heterogeneous complex catalyzed the isomerization of a variety of allylic alcohols in excellent yields with very low catalyst loadings (0.5 mol %). The catalyst could be recycled without significant loss of activity or selectivity. The optimized catalyst was characterized by N2 sorption, powder X-ray diffraction, transmission electron microscopy, as well as solution and solid-state nuclear magnetic resonance, and Fourier Transform infrared spectroscopies.
Place, publisher, year, edition, pages
2012. Vol. 4, no 2, 243-250 p.
aluminosilicates, heterogeneous catalysis, hydrogen bonds, immobilization, mesoporous materials, noncovalent interactions
IdentifiersURN: urn:nbn:se:su:diva-71861DOI: 10.1002/cctc.201100321ISI: 000299616800015OAI: oai:DiVA.org:su-71861DiVA: diva2:486432
FunderSwedish Research Council