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.

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► 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.