adjacent anti stereocenters and a free secondary amine. Spirocycles are formed from cyclic imines. We characterized the key oxidative addition intermediate and identified a major path leading to competing homocoupling products. The activation energy of oxidative addition and the rate of oxidative addition complex isomerization were determined. The sensitivity of the reaction to reaction conditions was established
我们报告了邻卤代芳基
亚胺和贫电子烯烃之间的
镍催化环化反应的发现、发展和机理。该反应产生两个相邻的反立体中心和一个游离的仲胺。螺环由环状
亚胺形成。我们表征了关键的氧化加成中间体,并确定了导致竞争同源偶联产物的主要途径。测定了氧化加成的活化能和氧化加成络合物异构化的速率。以定量方式建立反应对反应条件的敏感性,并介绍了该方法的范围和局限性。