Ruthenium metathesis catalyst bearing chelating carboxylate ligand immobilized on mesoporous molecular sieve SBA-15

Ruthenium complex 3b bearing chelating carboxylate ligand was immobilized on mesoporous molecular sieve SBA-15 via cleavage of carboxylate by fluorocarboxylic acid groups introduced on the support surface. The hybrid olefin metathesis catalyst Ru/L/SBA-15, prepared straightforward without use of silver salts, exhibited high activity and selectivity in model metathesis reactions and low ruthenium leaching.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ruthenium complex bearing chelating carboxylate ligand immobilized on SBA-15. ► Immobilization via cleavage of carboxylate by fluorocarboxylic acid groups. ► Hybrid olefin metathesis catalyst of high activity and low leaching.