Highly Selective Thioselenation of Vinylcyclopropanes with a (PhS)<sub>2</sub>−(PhSe)<sub>2</sub> Binary System and Its Application to Thiotelluration
作者:Akiya Ogawa、Ikuko Ogawa、Ryoichi Obayashi、Keita Umezu、Mikio Doi、Toshikazu Hirao
DOI:10.1021/jo981053q
日期:1999.1.1
corresponding gamma-(selenoethyl)allylic sulfides regioselectively in good yields. Similarly, vinylcyclopropanes undergo regioselective thiotelluration by use of a novel (PhS)(2)-(PhTe)(2) binary system, affording the corresponding ring-opened thiotelluration product in good yields. Furthermore, the scope and limitations of this (PhS)(2)-(PhTe)(2) binary system are discussed.
基于有机二卤化物和硫族元素为中心的自由基的相对反应性,已开发出一种新颖的,高度选择性的将有机硫,硒和碲官能团引入乙烯基环丙烷的方法。在用波长大于300nm的光照射时,乙烯基环丙烷与二苯基二硫化物和二苯基二硒化物的反应顺利进行,从而以良好的产率选择性地提供了相应的γ-(硒代乙基)烯丙基硫化物。类似地,乙烯基环丙烷通过使用新型(PhS)(2)-(PhTe)(2)二元系统进行区域选择性的硫代tellellation,以高收率提供相应的开环硫代碲化物。此外,讨论了该(PhS)(2)-(PhTe)(2)二元系统的范围和局限性。