Selective N Functionalization of Methane and Ethane to Aminated Derivatives by Main-Group-Directed C–H Activation
作者:Niles Jensen Gunsalus、Sae Hume Park、Brian G. Hashiguchi、Anjaneyulu Koppaka、Stacey J. Smith、Daniel H. Ess、Roy A. Periana
DOI:10.1021/acs.organomet.9b00246
日期:2019.6.10
direct conversion of light alkanes to aminated products by CH activation. Previous molecular systems reported for alkane amination operate by radical or nitrene-type reactions which generally result in unintended overfunctionalization. Here we disclose the first examples of direct conversion of methane and ethane to aminated products by C–H activation facilitated by electrophilic, main-group complexes dissolved
据我们所知,尚无先例通过CH活化将轻烷烃直接转化为胺化产物。先前报道的用于烷烃胺化的分子系统通过自由基或亚硝基类型的反应进行操作,这通常会导致意外的过度官能化。在这里,我们公开了通过溶解在N酸中的亲电主基络合物促进C–H活化而将甲烷和乙烷直接转化为胺化产物的第一个例子。基于添加的主族亲电试剂,烷烃转化产物的选择性高达> 95%,产率高达65%。实验研究和DFT计算支持C–H活化机制来生成经过N-官能化的金属烷基中间体。