Solvent-Free Fluorination of Electron-Rich Aromatic Compounds with F-TEDA-BF<sub>4</sub>
: Toward “Dry” Processes
作者:Pavel A. Zaikin、Ok Ton Dyan、Darya V. Evtushok、Andrey N. Usoltsev、Gennady I. Borodkin、Elena V. Karpova、Vyacheslav G. Shubin
DOI:10.1002/ejoc.201700179
日期:2017.5.3
An efficient and ecologically benign method for the fluorination of activated aromaticcompounds is developed. The solventless fluorination of naphthalen‐2‐ols is achieved, and vacuum‐sublimation is used to isolate the fluorinated products in high yields and purities.
Efficient Synthesis of 4-Fluorocyclohexa-2,5-dienone Derivatives Using N-Fluoro-1,4-diazoniabicyclo[2.2.2]octane Salt Analogues
作者:Stojan Stavber、Marjan Jereb、Marko Zupan
DOI:10.1055/s-1999-2840
日期:1999.9
4-Fluorocyclohexa-2,5-dienone derivatives were obtained in high yield by reaction of para substituted phenols with 1-fluoro-4-chloromethyl-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoro-borate) (1a, SelectfluorTM F-TEDA-BF4) or its 4-hydroxy analogue (1b, AccufluorTM NFTh) in acetonitrile. Estrogen steroids were readily converted to 10β-fluoro-1,4-estradiene-3-one derivatives in high yields.