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Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia
Author(s) -
Culver Damien B.,
Conley Matthew P.
Publication year - 2018
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.201809199
Subject(s) - organosilicon , chemistry , electrophile , zirconium , cubic zirconia , polymer chemistry , organic chemistry , catalysis , ceramic
The reaction of allyltriisopropylsilane with partially dehydroxylated sulfated zirconium oxide ( SZO ) forms surface organosilicon species. Solid‐state NMR studies of the organosilicon functionalized SZO shows that electrophilic [TIPS][ SZO ] sites are present on the surface, in addition to less reactive TIPS‐O x and SiO x species. The electrophilic [TIPS][ SZO ] sites are strong Lewis acids from solid‐state 31 P NMR analysis of triethylphosphine oxide (O=PEt 3 ) contacted materials. [TIPS][ SZO ] is active in hydrodefluorination reactions in the presence of Et 3 SiH.