Main > ORGANIC CHEMICALS > Chiral Organics > Hydrogenation > Ruthenium Catalyst Ligand > Ortho-Substituted BINAPO Ligand. > Synthesis

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SYNTHESIS prepared ortho-substituted BINAPO ligands [1,1'-bi-2-naphthylbis(diphenylphosphinite)s]. He says ortho-substitution restricts the orientation of aryl groups joined to phosphorus atoms and makes the ligands more effective than the unsubstituted versions. The new ligands have been used in ruthenium-catalyzed asymmetric hydrogenation of -aryl-substituted -(acylamino)acrylates to -aryl-substituted -(acylamino)esters at up to 99% ee.

For rhodium
UPDATE 06.02
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