Alcohols for the α-Alkylation of Methyl Ketones and Indirect Aza-Wittig Reaction Promoted by Nickel Nanoparticles
作者:Francisco Alonso、Paola Riente、Miguel Yus
DOI:10.1002/ejoc.200800729
日期:2008.10
Nickel nanoparticles have been found to activate primary alcohols used for the α-alkylation of ketones or in indirect aza-Wittig reactions. These processes involve hydrogen transfer from the alcohol to the intermediate α,β-unsaturated ketone or imine, respectively. All these reactions are carried out in the absence of any ligand, hydrogen acceptor or base under mild reaction conditions. For the first
已发现镍纳米粒子可激活用于酮的 α-烷基化或间接 aza-Wittig 反应的伯醇。这些过程分别涉及从醇到中间体 α,β-不饱和酮或亚胺的氢转移。所有这些反应都是在温和的反应条件下在没有任何配体、氢受体或碱的情况下进行的。在这两个反应中,镍首次被用作贵金属基催化剂的潜在替代品。在一些氘化实验的基础上提出了反应机理。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)