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SYNPHOS®, a new chiral diphosphine ligand: synthesis, molecular modeling and application in asymmetric hydrogenation

✍ Scribed by Sébastien Duprat de Paule; Séverine Jeulin; Virginie Ratovelomanana-Vidal; Jean-Pierre Genêt; Nicolas Champion; Philippe Dellis

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
227 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

A new optically active diphosphine ligand, [(5,6),(5%,6%)-bis(ethylenedioxy)biphenyl-2,2%-diyl]bis(diphenylphosphine) (SYNPHOS ® ) has been synthesized and used in ruthenium-catalyzed asymmetric hydrogenation. This new ligand has been compared to other diphosphines (BINAP and MeO-BIPHEP), regarding their dihedral angles and the enantioselectivity in the ruthenium mediated hydrogenation reaction.

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