Isolation of Catalytic Intermediates in Hydroamination Reactions: Insertion of Internal Alkynes into a Zirconium-Amido Bond
作者:David C. Leitch、Courtney S. Turner、Laurel L. Schafer
DOI:10.1002/anie.201001927
日期:2010.8.23
Insert alkyne to continue: Reaction of a bis(ureate) zirconium dimethylamido complex with electron‐rich alkynes leads to vinylamine insertion products (see scheme). The insertion of CC unsaturated bonds into MN bonds is proposed as a key step in lanthanide chemistry and, more recently, hydroamination reactions catalyzed by Group 4 metals. For the first time, these elusive intermediates have been
继续插入炔烃:双(脲酸酯)锆二甲基酰胺基络合物与富电子炔烃的反应会生成乙烯基胺插入产物(请参见方案)。C的插入碳不饱和键为M N键被提议作为镧系元素化学的关键步骤,最近,氢胺化反应由第4族金属催化。这些难以捉摸的中间体首次在具有催化活性的d 0-金属中心进行了分离和表征。