Abstract The relative rates of displacement of phenyl groups for a series of α, ω- diphenylpermethylated oligosilanes with the formula Ph (SiMe 2) n Ph (n= 2− 5) were studied. Triflic acid was utilized in the displacement reactions which occur as a two-step process with protonation at the ipso-carbon atom as the rate limiting step. The results showed the displacement of the firs phenyl group is more facile than the second group. ...
[Tsuji, Hayato; Shibano, Yuki; Takahashi, Tohru; Kumada, Makoto; Tamao, Kohei Bulletin of the Chemical Society of Japan, 2005 , vol. 78, # 7 p. 1334 - 1344]
![chloro-[dimethyl(phenyl)silyl]-dimethylsilane Structure](https://image.chemsrc.com/caspic/423/941-15-1.png)
