Domino assembly of dithiocarbamates Cu-catalyzed denitrogenative thiolation of iodotriazole-based diazo precursors.

An efficient domino approach to assemble benzoxazoles and anthranilamides bearing dithiocarbamate moieties has been developed. The proposed route represents a Cu-catalyzed three-component reaction between readily available 5-iodo-1,2,3-triazoles, amines, and CS. The cascade transformation is based on a denitrogenative coupling of formed dithiocarbamic acids with diazo intermediates, generated annulation-triggered triazole ring-opening. This method is applicable to nucleophilic secondary amines and features good functional group compatibility.