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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 194, 2019 - Issue 1-2
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Original Articles

Titanium-catalyzed hydrosilylation of olefins: A comparison study on Cp2TiCl2/Sm and Cp2TiCl2/LiAlH4 catalyst system

Xiaoling YangKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China;
,
Ying BaiKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China; Correspondence[email protected] [email protected]
,
Jiayun LiKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China;
,
Yu LiuKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China;
,
Jiajian PengKey Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China; Correspondence[email protected] [email protected]
,
Tianbo LiDalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
,
Rui LangDalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
&
Botao QiaoDalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
 show all
Pages 64-68 | Received 13 Mar 2018, Accepted 07 Jun 2018, Published online: 28 Dec 2018
 
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Abstract

Hydrosilylation of olefins catalyzed by Cp2TiCl2/Sm (Cp = cyclopentadienyl) under solvent free conditions have been investigated. By using Cp2TiCl2/Sm as catalyst system, β-adducts and hydrogenation products were detected. Hydrosilylation of olefins catalyzed by Cp2TiCl2/LiAlH4 under room temperature has also been studied. The influence of TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) on Cp2TiCl2/Sm and Cp2TiCl2/LiAlH4, respectively, indicated that hydrosilylation of olefins catalyzed with Cp2TiCl2/Sm went through a free radical reaction pathway while a coordination mechanism was applied for Cp2TiCl2/LiAlH4 catalyst system.

GRAPHICAL ABSTRACT

Acknowledgments

This work was supported by Natural Science Foundation of Zhejiang Province (LY18B020012) and Zhejiang Provincial Technologies R&D Program of China (grant no. 2017C31105).

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