Oligo(metallocene)s Containing Keto‐Bridged Phospholyl Rings

Abstract

A chiral racemic tris(phosphaferrocene) complex showing two bridging keto functionalities has been prepared diastereoselectively through the elaboration of a single 2,5-diester-substituted phosphaferrocene. The reaction profile involves the intervention of a single trinuclear complex, which contains two phosphametallocene units and an η 1 -coordi-

Synthesis, Structure, and Electrochemical Properties of 2,3,4,5-Tetraphenyl-1-Monophosphaferrocene Derivatives

“…Phosphaferrocenes are commonly regarded as phosphorus ligands with weaker σ-donor properties than classical tertiary phosphines and stronger π-acceptor ability similar to that of phosphites P(OR) 3 [ 6 ]. From a practical standpoint, monophosphaferrocenes have been utilized as chiral ligands in homogeneous and asymmetric catalysis [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ], as building blocks for multidentate ligand systems [ 15 , 16 , 17 , 18 ], and as functional materials for self-assembled monolayers [ 19 , 20 ].…”