A Convenient Preparation of 4-Methyl- and 4-Phenylseleno-1,1,1-trihalo-3-alken-2-ones and their Usefulness in the Synthesis of 3-Trihalomethylisoselenazoles - Martins, Marcos A P; Bastos, Giovani P; Sinhorin, Adilson P; Zimmermann, Nilo E K; Bonacorso, Helio G; Zanatta, Nilo (Synthesis, 2002)