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
描述了合成(CF 3 E)3 C部分(E = Se,S)的反应途径。发现[(CF 3 Se)3 C + ] [AsF]是用于制备(CF 3 Se)3 C衍生物的合适的合成子。它可以由(CF 3 Se)3 C衍生物制备。它可以由(CF 3 Se)4 C或(CF 3 Se)3 CF和AsF 5在液态SO 2中制备。通过FCBr 3的反应可直接进入(CF 3 Se)3 CF与Hg(SeCF 3)2。的治疗[(CF 3 Se)的3 Ç + ] [ASF 6 - ]与卤化钾提供(CF 3 Se)的3 CX(X = F,氯,溴)。与KI的反应不同,因为形成了CF 3 SeSeCF 3和(CF 3 Se)2 C = C(SeCF 3)2作为主要产物。少量(CF 3 Se)3 CC(SeCF 3)3形成了可以隔离和明确表征的特征。仅两条途径导致三重CF 3 S取代的乙酸酯(CF 3 S)3 CC(O)OR