Chemoselective <i>N</i>- and <i>O</i>-Difluoromethylation of 2-Pyridones, Isoquinolinones, and Quinolinones with TMSCF<sub>2</sub>Br
作者:Ziyue Zhu、Vinayak Krishnamurti、Xanath Ispizua-Rodriguez、Colby Barrett、G. K. Surya Prakash
DOI:10.1021/acs.orglett.1c02305
日期:2021.8.20
An operationally simple protocol for direct N- and O-difluoromethylation of 2-pyridones, quinolinones, and isoquinolinones using commercially available TMSCF2Br is disclosed. The chemoselectivity is modulated by simple variations in temperature, solvent, and strength of the base. Diverse, synthetically relevant functional groups are tolerated, including functional groups that have reported reactivity