Pd(II)-Catalyzed Synthesis of Carbolines by Iminoannulation of Internal Alkynes via Direct C−H Bond Cleavage Using Dioxygen as Oxidant
作者:Shengtao Ding、Zhuangzhi Shi、Ning Jiao
DOI:10.1021/ol100272s
日期:2010.4.2
A palladium-catalyzed iminoannulation of internal alkynes via direct C−H bond cleavage was developed. Dioxygen was employed as a clean oxidant in this kind of catalysis. Carbolines were synthesized from tert-butylimines of N-substituted indole-2-carboxaldehydes or indole-3-carboxaldehydes.
通过直接CH键断裂,
钯催化内部炔的亚
氨基环化。在这种催化中,将
氧气用作清洁氧化剂。咔啉由N-取代的
吲哚-2-甲醛或
吲哚-3-
甲醛的叔丁基
亚胺合成。