With a system consisting of a catalytic zinc Lewis acid, pyridine, and TEMPO in a nitrile medium, terminalalkynes coupled with HSnBu3, providing alkynylstannanes with structural diversity. The resulting alkynylstannane, without being isolated, could be directly used for Pd‐ and Cu‐catalyzed transformations to deliver internal alkynes and more intricate tin‐atom‐containing molecules. Mechanistic studies
Silole-Acetylene π-Electronic Systems with Low Bandgaps: Synthesis, Structure, and UV-vis Absorption Spectra of 2,5-Diethynylsiloles Derivatives and Their Polymers
作者:Shigehiro Yamaguchi、Kazuo Iimura、Kohei Tamao
DOI:10.1246/cl.1998.89
日期:1998.1
A series of 2,5-diethynylsilole derivatives and their polymers, prepared by the Stille coupling reaction, show unique optical properties such as long-wavelength absorptions in their UV-vis absorptionspectra.