Synthesis of Trifluoromethanesulfinamidines and -sulfanylamides
摘要:
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.
The super electrophilicity of a shelf-stable, easily prepared trifluoromethylthiolating reagent N-trifluoromethylthio-dibenzenesulfonimide 7 was demonstrated. Consistent with the theoretical prediction, 7 exhibits reactivity remarkably higher than that of other known electrophilic trifluoromethylthiolating reagents. In the absence of any additive, 7 reacted with a wide range of electron-rich arenes
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.
Superacid-Catalyzed Trifluoromethylthiolation of Aromatic Amines
Upon activation under superacid conditions, functionalized tailor‐made N‐SCF3 sulfenamides served as reagents for the trifluoromethylthiolation of aromaticamines. This method has a broad substrate scope and can be used for the late‐stage functionalization of complex molecules such as alkaloids or steroids. Mechanistic studies based on in situ low‐temperature NMR spectroscopy revealed the involvement