Regioselective Fluorination of 1-(2,2-Dibromovinyl)benzene Derivatives with Wet Tetra-<i>n</i>-butylammonium Fluoride: One-Pot Synthesis of (<i>Z</i>)-1-(2-Bromo-1-fluorovinyl)benzenes
A direct fluorination of 1-(2,2-dibromovinyl)benzene derivatives using wet tetra-n-butylammonium fluoride (TBAF·3H2O) as either a base or a fluorine source in toluene was accomplished, which provided (Z)-1-(2-bromo-1-fluorovinyl)benzene compounds in up to 81% yields with high regioselectivities. This reaction results strongly depend upon the reaction conditions. The mechanism of this reaction was investigated
Tunable Synthesis of Monofluoroalkenes and <i>Gem‐</i>Difluoroalkenes via Solvent‐Controlled Rhodium‐Catalyzed Arylation of 1‐Bromo‐2,2‐difluoroethylene
作者:Wen‐Yan Xu、Zhe‐Yuan Xu、Ze‐Kuan Zhang、Tian‐Jun Gong、Yao Fu
DOI:10.1002/anie.202310125
日期:2023.10.2
We report a solvent-controlled rhodium-catalyzed tunable arylation of 1-bromo-2,2-difluoroethylene, which allows the synthesis of monofluoroalkenes and gem-difluoroalkenes from readily available feedstocks. This study provides a useful strategy for the divergent synthesis of fluorine-containing scaffolds and sheds light on the importance of solvent selection in catalytic reactions.