Geminal difluorination of α,α’- disubstituted styrenes using fluoro-benziodoxole reagent. Migration aptitude of the α-substituents
作者:Nadia O. Ilchenko、Kálmán J. Szabó
DOI:10.1016/j.jfluchem.2017.07.006
日期:2017.11
α,α’-Disubstituted styrenes undergo a difluorination-rearrangement reaction with fluoro-benzoiodoxole reagent 1. The reaction is catalyzed by Pd(MeCN)4(BF4)2 and Cu(MeCN)4PF6. We have studied the rearrangement of α,α’-diaryl substitutedstyrenes, in which the aryl groups have different electronic character. In the case of α-aryl, α’-alkyl substitutedstyrenes, the aryl substituent has a higher migratory
Adcock,W. et al., Australian Journal of Chemistry, 1976, vol. 29, p. 2571 - 2581
作者:Adcock,W. et al.
DOI:——
日期:——
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