Silylated Cyclohexadienes as New Radical Chain Reducing Reagents: Preparative and Mechanistic Aspects
作者:Armido Studer、Stephan Amrein、Florian Schleth、Tobias Schulte、John C. Walton
DOI:10.1021/ja0341743
日期:2003.5.1
superior tin hydride substitutes for the conduction of various radical chain reductions. Debrominations, deiodinations, and deselenations can be performed using these environmentally benign reagents. Furthermore, Barton-McCombie-type deoxygenations using silylated cyclohexadienes are described. Radical cyclizations, ring expansions, and Giese-type addition reactions with the new tin hydride substitutes
各种甲硅烷基化的 1,4-环己二烯作为优良的氢化锡替代物,可用于各种自由基链还原的传导。可以使用这些环境友好的试剂进行脱溴、脱碘和脱硒。此外,还描述了使用甲硅烷基化环己二烯的 Barton-McCombie 型脱氧作用。介绍了与新的氢化锡替代物的自由基环化、扩环和 Giese 型加成反应。苯乙烯的聚合可以使用甲硅烷基化的环己二烯进行调节。测定了通过初级 C-自由基从两个 1-甲硅烷基-环己二烯中提取氢原子的速率常数。讨论了环己二烯取代基对反应结果的影响。最后,