4-Substituted (perfluoroalkylsulfonyl)benzenes have been synthesized by the oxidation of 4-substituted (perfluoroalkylthio)benzenes with hydrogen peroxide, anhydrous chromic oxide and potassiumpermanganate in good yields. 4-(Perfluoroalkylsulfonyl) anilines have been also prepared by the reduction of the corresponding nitrobenzenes.
Making the family portrait complete: Synthesis of Electron Withdrawing Group activated Hoveyda-Grubbs catalysts bearing sulfone and ketone functionalities
Synthesis of five Electron Withdrawing Group (EWG) activated Hoveyda-Grubbs' catalysts containing thioperfluoroalkyl, sulfone and ketone functions is reported. The catalytic activity of these catalysts was well correlated with the σp values of the Hammett constants for the respective EWGs. Importantly, one of new catalysts gave good results in synthesis of a macrocyclic precursor of anti-HCV agent