Dithioates of Meldrum’s acid, dimedone, and barbituric acid, novel sulfur transfer reagents for the one-pot copper-catalyzed conversion of aryl iodides into diaryl disulfides

We report herein the first application of CH-acid dithioates as sulfur transfer reagents. A new route for the synthesis of diaryldisulfides using the copper-catalyzed conversion of aryl iodides in the presence of Melderum’s acid, dimedone or barbituric acid dithioates is discussed.