Barbier/Grignard-Type Allylation or Benzylation Mediated by the Mischmetall/SmI2(cat.) System
作者:Aurore Di Scala、Stefania Garbacia、Florence Hélion、Marie-Isabelle Lannou、Jean-Louis Namy
DOI:10.1002/1099-0690(200209)2002:17<2989::aid-ejoc2989>3.0.co;2-0
日期:2002.9
achieved by the use of samarium diiodide in catalytic amounts together with mischmetall (an alloy of the light lanthanides) as a coreductant. Plausible catalytic schemes are proposed. In addition, organocerium and -lanthanum reagents have been obtained from samarium diiodide catalysed reactions between organic halides and cerium or lanthanum metal, giving a new route to organolanthanoid compounds. It also
Barbier 和 Grignard 型烯丙基化和苄基化是通过使用催化量的二碘化钐和作为助还原剂的混合稀土(一种轻镧系元素的合金)实现的。提出了合理的催化方案。此外,通过二碘化钐催化有机卤化物与铈或镧金属的反应获得有机铈和镧试剂,为有机镧系化合物提供了一条新途径。铈和镧的三价苄基和烯丙基有机金属化合物似乎比相应的钐更稳定。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)