Allyl trifluorophosphine complexes

Thus when the >73-l,l-dimethylallyltris(trifluorophosphine) complexes of cobalt or rhodium are gently warmed a rearrangement to the 73-l,2-isomer occurs (56, 295). The postulated mechanism involves a diene-metal hydride intermediate (Scheme 9). The small PF3 ligand can also be added directly to coordinatively unsaturated 3-allylic systems or to chloro-bridged structures (method H). 

Transition Metal ij3-Allyl Complexes Containing Trifluorophosphine... 

Oxidative addition of an allyl halide to a zero-valent complex (method D) or treatment of a trifluorophosphine metal late complex with an allylic halide followed by loss of PF3 (method E) have also been briefly reported. 

The parent TMM complex (190 R = H) undergoes photochemical ligand substitution with trifluorophosphine or trimethylamine Al-oxide assisted substitution with tertiary phosphines or t-butyl isocyanide (Scheme 5A) Trimethylamine A-oxide assisted substitution using isoprene as the incoming ligand results in C-C bond formation to afford the bis-TT-allyl complex (197). An intramolecular version of this reaction is also known.The parent complex (190 R = H) reacts with electrophiles. Addition of HCl or Br2 gives the methallyl complexes (192) and (198), respectively. Tetrafluoroethylene adds across the Fe bond to afford (199) under photochemical conditions. Complex (190) undergoes Friedel-Crafts-type acylation with... 

---