Efficient and Reliable Iodination and O-Methylation of Fluorinated Phenols
作者:Robert Francke、Gregor Schnakenburg、Siegfried R. Waldvogel
DOI:10.1002/ejoc.201000161
日期:2010.4
Fluorinatedphenols and other electron-deficient phenolic substrates are efficiently and cleanly iodinated by an iodine/ iodide mixture employing alkaline conditions. This protocol turned out to be the most practical for the generation of such highly fluorinated iodophenols. For later application in coupling processes the protection of the phenolic hydroxy moiety is often required. Therefore, a practical
作者:Larisa Politanskaya、Nadezhda Troshkova、Evgeny Tretyakov、Chanjuan Xi
DOI:10.1016/j.jfluchem.2019.109371
日期:2019.11
A simple and efficient approach to the synthesis of fluorinated benzofurans including the Sonogashira cross-coupling of o-iodophenols with terminal Ph- and n-Bu-acetylenes, followed by intramolecular cyclization, in good to excellent yields is reported.
Synthesis of polyfluorinated o-hydroxyacetophenones – convenient precursors of 3-benzylidene-2-phenylchroman-4-ones
作者:Larisa Politanskaya、Evgeny Tretyakov、Chanjuan Xi
DOI:10.1016/j.jfluchem.2019.109435
日期:2020.1
to the synthesis of fluorinated o-hydroxyacetophenones in good to excellent yields is reported. We demonstrated a convenient method for replacing the iodine atom in o-iodophenols with MeC(=O)– group through the introduction and subsequent hydrolysis of TIPS–C≡C– moiety by of p-toluenesulfonic acid monohydrate. The resulting compounds may serve as precursors for the synthesis of polyfluorinated 3-ben