Anti-Markovnikov Hydroheteroarylation of Unactivated Alkenes with Indoles, Pyrroles, Benzofurans, and Furans Catalyzed by a Nickel–<i>N</i>-Heterocyclic Carbene System
作者:York Schramm、Makoto Takeuchi、Kazuhiko Semba、Yoshiaki Nakao、John F. Hartwig
DOI:10.1021/jacs.5b08039
日期:2015.9.30
benzofurans, and furans, to unactivated terminal and internal alkenes. The reaction is catalyzed by a combination of Ni(COD)2 and a sterically hindered, electron-rich N-heterocyclic carbene ligand or its analogous Ni(NHC)(arene) complex. The reaction is highly selective for anti-Markovnikov addition to α-olefins, as well as for the formation of linear alkylheteroarenes from internal alkenes. The reaction occurs
我们报告了在杂芳烃(包括吡咯、吲哚、苯并呋喃和呋喃)的 C2 位置催化加成 CH 键到未活化的末端和内部烯烃。该反应由 Ni(COD)2 和位阻、富电子 N-杂环卡宾配体或其类似的 Ni(NHC)(芳烃) 配合物的组合催化。该反应对α-烯烃的反马尔科夫尼科夫加成以及从内烯烃形成线性烷基杂芳烃具有高度选择性。该反应发生在含有酮、酯、酰胺、硼酸酯、甲硅烷基醚、磺酰胺、缩醛和游离胺的底物上。