CeCl3 catalyzes the addition of Et2Zn to a variety of alipahtic and aromatic aldehydes and ketones in THF in the presence of TMSCl as a scavenger. Optimization of the applied solvent allowed to avoid the TMSCl mediated addition using CeCl3·(THF)2 or Ce(i-PrO)3 as catalysts. This represents the first application of lanthanide compounds for the addition of Et2Zn to carbonyl compounds.
CeCl3催化Et2Zn与多种脂肪族和
芳香族醛及酮在THF中反应,同时使用TMSCl作为清除剂。优化使用的溶剂使得能够避免TMSCl介导的反应,改为使用 ·(THF)2或Ce(i-PrO)3作为催化剂。这是
镧系化合物首次应用于Et2Zn与羰基化合物的加成反应。