Fusion of Aromatic Ring to Azoarenes: One-Pot Access to 5,6-Phenanthroliniums for Mitochondria-Targeted Far-Red/NIR Fluorescent Probes
作者:Zheng Liu、Yonghua Xian、Jingbo Lan、Yuanyuan Luo、Weixin Ma、Jingsong You
DOI:10.1021/acs.orglett.8b04072
日期:2019.2.15
Disclosed herein is a highly efficient strategy to fuse an aromatic ring to azoarenes for one-pot access to 5,6-phenanthrolinium skeletons via tandem ortho-C–H arylation and aryl quaternization. This protocol enables ortho-hindered azobenzenes to solely form 5-aryl-5,6-phenanthroliniums and ortho-unhindered azobenzenes to exclusively generate 5,7-diaryl-5,6-phenanthroliniums. The diarylated products
本文公开了一种高效的策略,通过串联邻位-C-H芳基化和芳基季铵化作用,将芳族环与偶氮芳烃融合,从而可以一锅通地进入5,6-菲咯啉骨架。该方案使得邻位受阻的偶氮苯仅形成5-芳基-5,6-菲咯啉,邻位不受阻的偶氮苯仅产生5,7-二芳基-5,6-菲咯啉。二芳基化产物(5k - 5r)表现出远红至近红外发射(678-742 nm),斯托克斯位移大,可以特异性点亮活细胞中的线粒体,而且具有出色的光稳定性和低细胞毒性。