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Rhodium and Ruthenium Complexes of 1,1′‐Bis(phosphetano)ferrocenes: Structural Characterisation and Catalytic Behaviour
Author(s) -
Marinetti Angela,
Labrue Francis,
Pons Bénédicte,
Jus Sébastien,
Ricard Louis,
Genêt JeanPierre
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300051
Subject(s) - ruthenium , rhodium , chemistry , moiety , catalysis , chelation , medicinal chemistry , stereochemistry , organic chemistry
The first structural characterisation of ruthenium and rhodium complexes of the 1,1′‐bis(phosphetano)ferrocenes 1 (FerroTANEs) − namely [{( S , S )‐ i Pr‐ 1 }RuCl 2 Py 2 ] and [{( S , S )‐ i Pr‐ 1 }Rh(COD)OTf] − is reported. X‐ray data show that the ruthenium complex and the rhodium chelate complex both adopt δ conformations, as a result of the ( S , S ) configuration of the phosphetane moiety. The ruthenium complexes promote the catalytic hydrogenation of β‐keto esters with moderate to high enantioselectivities. The behaviour of the rhodium complexes of 1 is compared with that of other phosphetane‐based catalysts in the hydrogenation of methyl N ‐acetamidocinnamate. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)