A Transition-Metal−η<sup>4</sup>-Diene Cation Can Undergo
Nucleophilic Addition at the Internal Carbon
Jang-Shyang Fan
Rai-Shung Liu
10.1021/om971033z.s001
https://acs.figshare.com/articles/journal_contribution/A_Transition-Metal_sup_4_sup_-Diene_Cation_Can_Undergo_Nucleophilic_Addition_at_the_Internal_Carbon/3781578
Treatment of
CpW(CO)<sub>2</sub>(η<sup>4</sup>-cyclohexadiene)BF<sub>4</sub> with RMgBr (R = methylvinyl, phenyl,
naphthyl)
in cold THF (−78 °C) afforded the
CpW(CO)<sub>2</sub>[(1,2,4-η)-1-CO-2-R-cyclohexene] complex as the major product;
this result provides an example of a nucleophile attacking the internal carbon of a cationic η<sup>4</sup>-diene
fragment.
1998-02-24 00:00:00
naphthyl
diene fragment
Undergo Nucleophilic Addition
cationic η 4
methylvinyl
Internal Carbon Treatment
CO
phenyl
THF
nucleophile
Diene Cation
cyclohexadiene
RMgBr
CpW