Te-trifluoromethylarenetellurocarboxylates ArC(O)TeCF3 were prepared by the reaction of corresponding acyl chlorides with trifluoromethyltelluranyltrimethyltin Me3SnTeCF3. It also reacts with halogen atoms in many organic compounds to give RTeCF3 derivatives. (C) 1999 Elsevier Science S.A. All rights reserved.