FLUORINATED POLYMERIC BINAP LIGAND FOR ASYMMETRIC HYDROGENATION IN SC CO_2

摘要

The chiral polymeric BINAP ligand was synthesized by condensation of the 6,6'diaminoethyl-perfluoroBINAP with terephtaldicarboxaldehyde. The synthesized polymeric ligand was characterized ~1H, ~(19)F and ~(31)P NMR.. Rhodium complex of ligand gives 55-85% conversation for the hydrogenation of styrene Hydrogenation was carried out in 0.050 mmol of ligand solution of scCO_2 under following reaction conditions: Substrate/catalyst= 200 (molar ratio); H_2 pressure 10 bar, CO_2 pressure 1800 psi 323.15-352.15 K, and determined by chiral GC analysis.