Utilizing Native Directing Groups: Synthesis of a Selective I<sub>Kur</sub> Inhibitor, BMS-919373, via a Regioselective C–H Arylation
作者:Steven R. Wisniewski、Jason M. Stevens、Miao Yu、Kenneth J. Fraunhoffer、Evan O. Romero、Scott A. Savage
DOI:10.1021/acs.joc.8b02254
日期:2019.4.19
BMS-919373 is a highly functionalized quinazoline under investigation as a selective, potent IKur current blocker. By utilizing the aminomethylpyridine side chain at C-4, a selective C–H functionalization at C-5 was invented, enabling the efficient synthesis of this molecule. The strategy of leveraging this inherent directing group allowed the synthesis of this complex heterocycle in only six steps from
Palladium(II)-Catalyzed Regioselective Arylation of Naphthylamides with Aryl Iodides Utilizing a Quinolinamide Bidentate System
作者:Lehao Huang、Qian Li、Chen Wang、Chenze Qi
DOI:10.1021/jo400017v
日期:2013.4.5
A palladium(II)-catalyzed quinolinamide-directed 8-arylation of 1-naphthylamides with aryl iodides is reported. The bidentate directing group (quinolinamide) proved to be crucial for a highly regioselective transformation. In addition, the amide directing group can be easily hydrolyzed under basic conditions to offer a range of 8-aryl-1-naphthylamine derivatives. The theoretical calculations suggest that the C-H arylation reaction proceeds through a sequential C-H activation/oxidative addition pathway.