We have developed a novel ring-opening difluorination process for pyrazoloazines. Utilizing 2.5 equivalents of Selectfluor®, this method enables electrophilic difluorination and subsequent ring-opening of pyrazoloazines, yielding the corresponding difluoroalkylated azines. Additionally, our protocol extends to the decarbonylative difluorination of pyrazoloazines when starting with a formyl group at
Copper-Mediated Cyanodifluoromethylation of (Hetero)aryl Iodides and Activated (Hetero)aryl Bromides with TMSCF2CN
作者:Jeremy Nicolai、Tommaso Fantoni、Trevor W. Butcher、Sophie I. Arlow、Serhiy V. Ryabukhin、Dmytro M. Volochnyuk、John F. Hartwig
DOI:10.1021/jacs.4c03618
日期:2024.6.5
copper-mediated cyanodifluoromethylation of aryl and heteroaryl iodides and activated aryl and heteroarylbromides with TMSCF2CN. This cyanodifluoromethylation tolerates an array of functional groups, is applicable to late-stage functionalization of complex molecules, yields analogues of FDA-approved pharmaceuticals and fine chemicals, and enables the synthesis of a range of complex molecules bearing a difluoromethylene