Synthesis of 3-Trifluoromethylbenzofurans via Palladium-Catalyzed Tandem Elimination/Annulation of β-Chloro-β-(trifluoromethyl)styrenes with 2-Halophenols
作者:Lian-Hui Chen、Xing-Guo Zhang、Chong Wang、Chen-Liang Deng
DOI:10.1055/s-0033-1338560
日期:——
A palladium-catalyzed tandem elimination and annulation reaction has been developed. In this way, a variety of 3-trifluoromethybenzofurans were prepared in moderate to good yields via tandem reaction of beta-chloro-beta-(trifluoromethyl)styrenes with 2-iodophenols and 2-bromophenols.
One-pot synthesis of 3-trifluoromethylbenzofurans via tandem iodocyclization and trifluoromethylation of 2-alkynylanisoles
A two-step, one-pot tandem iodocyclization and trifluoromethylation have been developed. A variety of 3-trifluoromethylbenzofurans were prepared in moderate to good yields via the tandem reaction of 2-alkynylanisoles with elemental iodine and (trifluoromethyl)trimethylsilane.