、 MoCl4(Et2O)2 以
not given 为溶剂,
以65%的产率得到bis(trimethylsilylcyclopentadienyl)molybdenum dichloride
参考文献:
名称:
Regio- and Stereochemical Aspects of the Substitution Reaction between the Molybdenocene and Tungstenocene Dichlorides (η5-C5H4-R)2MCl2 (R = CMe3, SiMe3; M = Mo, W) and Metallophosphide Anions [(CO)5M‘PPh2]Li (M‘ = Mo, W)
摘要:
The reaction of metallophosphide anions [(CO)(5)M'PPh2]Li (M' = Mo, W) with the metallocene dichlorides (eta (5)-Cp')(2)MCl2 (M = Mo, W; Cp' = C5H4-CMe3 (noted-CM) or C5H4- SiMe3 (noted -SiM)) leads to complexes (eta (5)-Cp ")(eta (5)-Cp')MHCl (Cp " = C5H3-1-R-3-PPh2M'-(CO)(5)), which arise from a nucleophilic substitution on the cyclopentadienyl ligand. The reaction is partially (molybdenocene series) or completely (tungstenocene series) diastereogenic. In solution, a slow transformation of kinetic to thermodynamic products is detected in the molybdenum derivatives, while their tungsten homologues show a total stereostability. On the basis of X-ray structures and of NMR data the relative configurations of the stereoisomers are established.