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Highly Rigid Diphosphane Ligands with a Large Dihedral Angle Based on a Chiral Spirobifluorene Backbone

Xu Cheng, Qi Zhang, Jian-Hua Xie, Li-Xin Wang, Qi-Lin Zhou*

*State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Email:

X. Cheng, Q. Zhang, J.-H. Xie, L.-X. Wang, Q.-L. Zhou, Angew. Chem. Int. Ed., 2005, 44, 1118-1121.

DOI: 10.1002/anie.200462072 (free Supporting Information)


Ruthenium complexes of rigid diphosphane ligands with large dihedral angles are highly efficient catalysts for the asymmetric hydrogenation of α,β-unsaturated carboxylic acids.

see article for more examples

Iridium-Catalyzed Enantioselective Hydrogenation of α,β-Unsaturated Carboxylic Acids

S. Li, S.-F. Zhu, C.-M. Zhang, S. Song, Q.-L. Zhou, J. Am. Chem. Soc., 2008, 130, 8584-8585.

Key Words

Asymmetric Hydrogenations, Hydrogenation of Unsaturated Compounds, Hydrogen

ID: J06-Y2005-140