Palladium‐catalyzed trifluoromethylthiolation of chelation‐assisted C–Hbonds has been accomplished by employing a readily accessible electrophilic trifluoromethylthiolating reagent.
螯合辅助CH键的钯催化三氟甲基硫醇化反应是通过使用易于获得的亲电子三氟甲基硫醇化试剂完成的。
One pot synthesis of trifluoromethyl aryl sulfoxides by trifluoromethylthiolation of arenes and subsequent oxidation with hydrogen peroxide
various aryl trifluoromethyl sulfides. Trifluoroaceticacid was used as an activating solvent that enables non-catalyzed oxidation and increases selectivity for sulfoxide formation. As shown by oxidation of thianthrene TFA enhances electrophilic character of the oxidant and further oxidation of sulfoxide group is blocked. We have joined trifluoromethylthiolation of arenes using a modified Billard reagent
Synthesis of Trifluoromethanesulfinamidines and -sulfanylamides
作者:Aurélien Ferry、Thierry Billard、Bernard R. Langlois、Eric Bacqué
DOI:10.1021/jo8018544
日期:2008.12.5
Fluorinated moieties constitute important substituents used in many applications to modify the properties of molecules. The action of DAST onto Ruppert's rea gent yields to a not isolable intermediate that can then react with various primary amines to give trifluoromethanesulfinamidines and trifluoromethanesulfanylamides. Such compounds were unknown until now and constitute interesting new families of fluorinated molecules.
Diversification of Trifluoromethylthiolation of Aromatic Molecules with Derivatives of Trifluoromethanesulfenamide
作者:Monika Horvat、Marjan Jereb、Jernej Iskra
DOI:10.1002/ejoc.201800551
日期:2018.8.1
react by trifluoromethylthiolation of itself. This reaction was the most important side reaction of 1a. The pentafluoro derivative 1c was less reactive. Solvent played an important role in the transformation and, depending on the substrate, dichloromethane, hexane or trifluoroaceticacid gave the best yield of various trifluoromethylthiolated aromatic molecules (63–98 %).
of Trp residues in shortpeptides (66–80% yield) and the synthesis of various CF3S-analogues of biologically active monoamines. To prove the concept, Fmoc-(CF3S)Tyr and -Trp were incorporated into the endomorphin-1 chain (EM-1) and into model tripeptides by solid-phasepeptidesynthesis. A remarkable enhancement of the local hydrophobicity of the trifluoromethylthiolated peptides was quantified by the