Difluorinative ring expansions of benzo-fused carbocycles and heterocycles are achieved with<i>p</i>-(difluoroiodo)toluene
作者:Zhensheng Zhao、Avery J. To、Graham K. Murphy
DOI:10.1039/c9cc08310c
日期:——
A chemoselective fluorinative ring expansion has been realized using the hypervalent iodine (HVI) reagent p-TolIF2, which delivers β,β-difluoroalkyl arenes in yields up to 89% and allylic gem-difluorides in yields up to 78%. This rapid reaction exploits the ambiphilic nature of alkenes and allenes, and incorporates both fluorine atoms of the (difluoroiodo)arene in the products. The mechanism involves