Reaction of the ylide complex [(η5-C5H5)Re(NO)(PPh3)(CH2P+Ar3)]PF6– with η-butyl-lithium–tetramethylenediamine; generation and stereospecific alkylation of a transition metal-substituted Wittig reagent
Abstract
The title reaction (tetrahydrofuran, –24 °C, 2 h) gives [(η5-C5H5)Re(NO)(PPh3)([graphic omitted]H–P+Ar3)](2; Ar =p-MeC6H4), which upon treatment with MeOSO2CF3 gives (SS,RR)-[(η5-C5H5)Re(NO)(PPh3){CH(Me)P+Ar3}]PF6–[(SS,RR)-(3)] stereospecifically.