Rhodium-Catalyzed Regioselective <i>N</i>
<sup>2</sup>
-Alkylation of Benzotriazoles with Diazo Compounds/Enynones via a Nonclassical Pathway
作者:Kai Wang、Ping Chen、Danqing Ji、Xinhao Zhang、Guangyang Xu、Jiangtao Sun
DOI:10.1002/anie.201807039
日期:2018.9.17
rhodium‐catalyzed highly selective N2‐alkylation of benzotriazoles with diazo compounds/enynones is achieved, providing N2‐alkylated benzotriazoles in good to excellent yields and with excellent N2 selectivities. Importantly, different to traditional carbene insertion into X−H (X=N, O etc) bonds, DFT calculations disclose that this selective N2‐alkylation probably proceeds through a formal 1,3‐ rather than
实现了新颖的铑重氮与苯并三唑的高选择性N 2烷基化反应,并带有重氮化合物/乙炔,可提供N 2烷基化的苯并三唑良好的收率和优异的N 2选择性。重要的是,与传统的卡宾插入X-H键(X = N,O等)不同,DFT计算表明,这种选择性的N 2烷基化可能通过正式的1,3-而不是1,2-H移位进行,从而得到最终产品。