The diastereomeric Fe*(MR3(CO)(P*R1R2R3)Cp complexes (M Si, Ge and Sn, R aryl or methyl) are synthesized by photolysis of the prochiral Fe(MR3(CO)2Cp, precursors in the presence of the corresponding racemic phosphorus III ligands. Asymmetric induction at iron is observed if the phosphorus atom is bound to a group containing a specific heteroatom (nitrogen or oxygen).
非对映体Fe *(MR 3(CO)(P * R 1 R 2 R 3)Cp配合物(MSi,Ge和Sn,R芳基或甲基)是通过前手性Fe(MR 3(CO )2 Cp,在相应的外消旋
磷III
配体存在下的前体,如果
磷原子与包含特定杂原子(氮或氧)的基团结合,则在
铁上观察到不对称感应。