作者:Akio Kamimura、Koichiro Miyazaki、Takuji Kawamoto、Hidemitsu Uno
DOI:10.1016/j.tet.2016.04.078
日期:2016.12
The radical cascade reaction of allyltin with aza-1,6-enyne compounds was studied. Optically active aza-1,6-enynes underwent a radical cascade process in the presence of a high concentration of allyltributyltin to give stannolanes as the major isomer. Piperidines were also observed in small amounts when an allylic unit was introduced stereoselectively to the trans-position of the aryl group at the
研究了烯丙基锡与aza-1,6-enyne化合物的自由基级联反应。在高浓度的烯丙基三丁基锡的存在下,光学活性的aza-1,6-enynes经历了自由基级联过程,从而得到锡诺烷作为主要异构体。当将烯丙基单元立体选择性地引入C 2位置的芳基的转位时,也观察到少量的哌啶。随着锡试剂的浓度,产物的产率急剧下降。哌啶中环戊亚甲基上的E / Z选择性取决于反应温度,并且在30℃下进行反应时几乎增加一倍。在这项研究中,讨论了自由基级联反应的机理。