Copper-catalyzed regio- and stereo-selective hydrosilylation of terminal allenes to access (E)-allylsilanes

Shaowei Chen, Xiaoqian He, Yi Jin, Yu Lan () and Xiao Shen ()
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Shaowei Chen: Wuhan University
Xiaoqian He: Chongqing University
Yi Jin: Wuhan University
Yu Lan: Chongqing University
Xiao Shen: Wuhan University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Regioselectivity and stereoselectivity control in hydrosilylation of terminal allenes is challeging. Although the selective synthesis of vinylsilanes, branched allylsilanes or linear (Z)-allylsilanes have been achieved, transition-metal catalyzed hydrosilylation of terminal allenes to access (E)-allylsilane is difficult. Herein, we report a copper-catalyzed selective hydrosilylation reaction of terminal allenes to access (E)-allylsilanes under mild reaction conditions. The reaction shows broad substrate scope, representing an efficient method to prepare trisubstituted (E)-allylsilanes through hydrosilylation reaction of allenes and can also be applied in the synthesis of disubstituted (E)-allylsilanes. The mechanism study reveals that the E-selectivity is kinetically controlled by the catalyst but not by the thermodynamically isomerization of the (Z)-isomer.

Date: 2022
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DOI: 10.1038/s41467-022-31458-2

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