Preparation and Reactivity of Tris(trifluoromethylselanyl)carbenium [(CF
<sub>3</sub>
Se)
<sub>3</sub>
C
<sup>+</sup>
] and Trifluoromethylsulfanylacetic Acid Derivatives [(CF
<sub>3</sub>
S)
<sub>
3–
<i>n</i>
</sub>
CX
<sub>
<i>n</i>
</sub>
(O)R]
作者:Alois Haas、Guido Möller
DOI:10.1002/cber.19961291112
日期:1996.11
Reaction pathways for the synthesis of the (CF3E)3C moieties (E = Se, S) are described. [(CF3Se)3C+][AsF] was found to be a suitable synthon for the preparation of (CF3Se)3C derivatives. It can be prepared either from (CF3Se)3C derivatives. It can be prepared either from (CF3Se)4C or (CF3Se)3CF and AsF5 in liquid SO2. Direct access to (CF3Se)3CF was realized by the reaction of FCBr3 with Hg(SeCF3)2