Synthesis of optically active silicon–iron compounds. Stereochemistry of silicon–iron bond breaking
Abstract
U.v. irradiation of the optically active compound (+)-[(π-Cp)Fe(CO)2SiMePh(1-Np)](I) in the presence of PPh3 gives the diastereoisomers (–)- and (+)-[(π-Cp)Fe(CO)(PPh3)SiMePh(1-Np)](II); cleavage by chlorine of the Si–Fe bond occurs with predominant retention at silicon in the case of (I) and (II), and with predominant inversion for the diastereoisomers (II) in the presence of PPh3.