Communication
ChemComm
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PhSiH3 to regenerate (RSiO)2LnPh to promote the catalytic
cycle (Scheme S1 in the ESI†).
¨
V. Karttunen, A. Bockholt, A. Genest, N. Rosch and B. Rieger,
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In conclusion, Ln(CH2C6H4NMe2-o)3 (Ln = La, Y) could be
grafted onto the dehydroxylated periodic mesoporous silica
support SBA-15 to give the corresponding organometallic–
inorganic hybrid materials Ln(CH2C6H4NMe2-o)3@SBA-15
(Ln = La, Y), which showed a promising catalytic activity in
the redistribution of a wide range of primary arylsilanes to
secondary arylsilanes with extremely high selectivity (499%)
without the requisition of controlling the reaction conditions.
These catalysts could be recovered and reused without the loss
in selectivity, albeit the activity decreased dramatically after
three recycling steps. Such kind of rare-earth metal materials
might find a practical application in organic transformation
owing to their easy preparation, high catalytic efficiency and
recyclable property. Further study on exploiting the potential
applications in catalysis of these hybrid materials is ongoing.
We acknowledge financial support from the National Natural
Science Foundation of China (21572205 and 21971130), the Natural
Science Foundation of Zhejiang Province (LY19B040002), the
Natural Science Foundation of Ningbo Municipal (2019A610030
and 2019A610129), and K. C. Wong Magna Fund in Ningbo
University.
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Conflicts of interest
There are no conflicts to declare.
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