The study of intramolecular tandem radical cyclizations of acylsilanes with radicalphiles attached on silicon
作者:Kuo-Hsiang Tang、Fang-Yu Liao、Yeun-Min Tsai
DOI:10.1016/j.tet.2004.12.053
日期:2005.2
Radical cyclizations of acylsilanes with radicalphilic pendant introduced on silicon proceeded in a tandem fashion to give spiro products containing a cyclic silyl ether skeleton. Because the alkoxysilyl group can be replaced with a hydroxy group through oxidation, the spiro silyl ethers can be converted into diols. In the case with a radical intermediate carrying 2-oxa-3-sila-6-heptenyl skeleton,
带有在硅上引入的具有自由基的侧基的酰基硅烷的自由基环化以串联方式进行,以得到含有环状甲硅烷基醚骨架的螺环产物。因为烷氧基甲硅烷基可以通过氧化被羟基取代,所以螺硅烷基醚可以转化为二醇。在与自由基中间输送2-氧杂-3-硅杂-6-庚烯基骨架的情况下,产品从1,7-衍生内环化反应以良好产率获得。