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Updated: Jan 18, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
SmI2/Sm-Induced Reductive Silacyclization of Alkene/Diene Derivatives Using Dichlorosilanes or 1,2-Dichlorodisilanes
Zhengwei Chen1, Daigo Kondo1, Tsutomu Mizota1
1Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto, Japan.
Abstract:
The development of efficient strategies for constructing cyclic organosilicon frameworks is considered of great importance because of their structural diversity and synthetic utility. Herein, we report a SmI2/Sm-mediated silacyclization of unsaturated organic compounds with readily available dichlorosilanes and -disilanes, enabling convenient access to 4-7-membered silacyclic compounds. Mechanistic investigations indicate that the reaction involves silyl radical intermediates and proceeds via a reductive radical-polar crossover (RRPCO) pathway. The present findings showcase the broad potential of Sm reagents in Si─C bond formation, providing a versatile strategy for constructing diverse silicon-containing frameworks.
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