Activation of C−F Bonds by Electrophilic Organosilicon Sites Supported on Sulfated Zirconia | Zendy

Culver Damien B. | Zendy; Conley Matthew P. | Zendy

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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.

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