Synthesis of Tris‐ and Tetrakis(pentafluoroethyl)silanes | Zendy

Steinhauer Simon | Zendy; Bader Julia | Zendy; Stammler HansGeorg | Zendy; Ignat‘ev Nikolai | Zendy; Hoge Berthold | Zendy

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Synthesis of Tris‐ and Tetrakis(pentafluoroethyl)silanes

Author(s) -

Steinhauer Simon,

Bader Julia,

Stammler HansGeorg,

Ignat‘ev Nikolai,

Hoge Berthold

Publication year - 2014

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201400291

Subject(s) - silanes , silane , chemistry , tris , lewis acids and bases , fluoride , silicate , organic chemistry , polymer chemistry , catalysis , inorganic chemistry , biochemistry

The synthesis and complete characterization of functional, highly Lewis acidic tris(pentafluoroethyl)silanes as well as tetrakis(perfluoroalkyl)silanes Si(C 2 F 5 ) 4 and Si(C 2 F 5 ) 3 CF 3 by direct fluorination is described. The reaction of SiCl 4 with LiC 2 F 5 invariably affords (pentafluoroethyl)fluorosilicates. To avoid silicate formation by fluoride transfer from LiC 2 F 5 the Lewis acidity of the silane has to be decreased by electron‐donating substituents, such as dialkylamino groups. The easily accessible Si(C 2 F 5 ) 3 NEt 2 is a valuable precursor for a series of tris(pentafluoroethyl)silanes.

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