Enantioselective Synthesis of Tertiary Allylic Fluorides by Iridium‐Catalyzed Allylic Fluoroalkylation
作者:Trevor W. Butcher、John F. Hartwig
DOI:10.1002/anie.201807474
日期:2018.10
Few allylic electrophiles containing two different substituents at a single allyl terminus and none in which one of the two substituents is a heteroatom, have been shown previously to react with iridium catalysts to form substitution products. We report that iridium‐catalysts are uniquely suited to form tertiary allylic fluorides enantioselectively by the addition of a diverse range of carbon‐centered
先前已显示很少有烯丙基亲电子试剂在单个烯丙基末端含有两个不同的取代基,并且其中两个取代基之一都不是杂原子的烯丙基亲电试剂与铱催化剂反应形成取代产物。我们报告说,铱催化剂特别适合通过在3-氟取代的烯丙基酯的含氟末端添加多种以碳为中心的亲核试剂,对映选择性地形成叔烯丙基氟化物。产品包含带有单个氟的叔立体中心,与具有单个氢的普通叔立体中心是等排的。计算研究表明,主要的空间相互作用会影响由3,3-二取代的烯丙基亲电试剂形成的内和外π-烯丙基中间体的稳定性。