S -α-酮基二硫代碳酸酯(黄原酸酯)与三乙基乙烯基硅烷的自由基加合物在臭氧分解后转化为三乙基甲硅烷基取代的环丙烷,然后在回流的乙腈中暴露于1,4-二溴丁烷和Cs 2 CO 3 / 18-crown-6。该序列最适用于苯甲酰基型加合物,使用体积较小的三甲基甲硅烷基(TMS)衍生物会导致大量的甲硅烷基化。
S -α-酮基二硫代碳酸酯(黄原酸酯)与三乙基乙烯基硅烷的自由基加合物在臭氧分解后转化为三乙基甲硅烷基取代的环丙烷,然后在回流的乙腈中暴露于1,4-二溴丁烷和Cs 2 CO 3 / 18-crown-6。该序列最适用于苯甲酰基型加合物,使用体积较小的三甲基甲硅烷基(TMS)衍生物会导致大量的甲硅烷基化。
A Flexible Radical-Based Approach to TMS-Substituted Propargyl Alcohols and to 2,3-Allenols
作者:Zhi Li、Samir Z. Zard
DOI:10.1021/ol900739x
日期:2009.7.2
The radical reaction of TMS-substituted xanthates with 2,2-dichlorovinyl ethyl sulfone afforded TMS-substituted homodichlorovinyl compounds that can be transformed into TMS-substituted propargyl alcohols. Various 2,3-allenols were efficiently prepared from the reaction of these TMS-substituted propargyl alcohols with TBAF.
A flexible, modular route to cyclopentanols
作者:Zhi Li、Samir Z. Zard
DOI:10.1016/j.tetlet.2009.09.157
日期:2009.12
A flexible, modular route to cyclopentanols is devised based on a sequence of xanthate radical reactions followed by magnesium-mediated ketyl-olefin cyclization. (C) 2009 Published by Elsevier Ltd.