Aromatic and heteroaromatic diazonium salts were efficiently converted into the corresponding trifluoromethylthio- or selenoethers by reaction with Me4 NSCF3 or Me4 NSeCF3 , respectively, in the presence of catalytic amounts of copper thiocyanate. These Sandmeyer-type reactions proceed within one hour at room temperature, are applicable to a wide range of functionalized molecules, and can optionally be combined with the diazotizations into one-pot protocols.
Keywords: Sandmeyer reaction; copper; fluorine; fluoroalkylthiolation; synthetic methods.
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.