The preparation of organolanthanoid species from diorganomagnesium and lanthanoid salt is discussed. Treatment of cerium trichloride or ytterbium trichloride with diorganomagnesium gave the corresponding organolanthanoid species much more efficiently than treatment of the salt with organomagnesiumhalide.
Transition-metal chloride mediated addition reaction of diorganomagnesium to easily enolizable ketones
作者:Mutsumi Sada、Seijiro Matsubara
DOI:10.1016/j.tet.2011.02.009
日期:2011.4
is difficult to perform with Grignardreagent (RMgX) or with diorganomagnesium (R2Mg), because a deprotonation to form a magnesium enolate occurs predominantly. To avoid the prior enolization, a complex reagent of a transition-metal salt and R2Mg was examined: A combination of R2Mg with iron(II) chloride (FeCl2) or ytterbium(III) chloride (YbCl3) gave a complex reagent that can realize a nucleophilic
Iron(II) Chloride-mediated Addition of Dialkylmagnesium to Carbonyl Compounds
作者:Mutsumi Sada、Seijiro Matsubara
DOI:10.1246/cl.2008.800
日期:2008.7.5
Addition reactions to carbonyl compounds with a complex reagent, prepared from organomagnesium and iron(II) chloride, were examined. The reagent works as effective nucleophile to an easily enolizab...
研究了使用由有机镁和氯化铁 (II) 制备的复杂试剂与羰基化合物的加成反应。该试剂作为有效的亲核试剂可轻松烯醇化...
Ultrasound assisted preparation of organocerium reagents
作者:Nicholas Greeves、Lisa Lyford
DOI:10.1016/s0040-4039(00)61278-9
日期:1992.8
Sonication of anhydrous CeCl3 in tetrahydrofuran facilitates rapid preparation of organoceriumreagents.