Synthesis, Isolation, and Characterization of Mono- and Bis-norbornene-Annulated Biarylamines through Pseudo-Catellani Intermediates
作者:Pratheepkumar Annamalai、Huan-Chang Hsiao、Selvam Raju、Yi-Hsuan Fu、Pei-Ling Chen、Jia-Cherng Horng、Yi-Hung Liu、Shih-Ching Chuang
DOI:10.1021/acs.orglett.9b00119
日期:2019.2.15
A palladium-catalyzed C–H functionalization of an external ring of N-acyl 2-aminobiaryl with bicyclo[2.2.1]hept-2-ene (norbornene) via multiple C–H bond activations was developed. This study is the first report of the formation of bis-norbornene annulated biarylamines isomers (syn-3a′/anti-3a′ = 36:64) from multiple C–H bond functionalizations. Additionally, nondirected C–H bond functionalization at
通过多个CH键活化,开发了钯催化的N-酰基2-氨基联芳与双环[2.2.1]庚-2-烯(降冰片烯)外环的CH功能化。这项研究是第一个关于由多个C–H键官能化形成双降冰片烯环化的联芳基胺异构体(syn - 3a' / anti - 3a' = 36:64)的报道。此外,在C-4'位置用烯烃进行的无方向C–H键官能化可完全形成五个C–H键的C–H功能化,从而形成一个稳定的六取代苯环。