REACTION OF THE YLIDE COMPLEX [(ETA-5-C5H5)RE(NO)(PPH3)(CH2P+AR3)]PF6- WITH NORMAL-BUTYL-LITHIUM TETRAMETHYLETHYLENEDIAMINE - GENERATION AND STEREOSPECIFIC ALKYLATION OF A TRANSITION METAL-SUBSTITUTED WITTIG REAGENT
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The title reaction (tetrahydrofuran, -24C, 2 h) gives [(5-C5H5)Re(NO)(PPh3)(CH- P+Ar3)] (2; Ar = p-MeC6H4), which upon treatment with MeOSO2CF3 gives (SS,RR)- [(5-C5H5)Re(NO)(PPh3){CH(Me) P+Ar3}]PF6- [(SS,RR)-(3)] stereospecifically.