Application of 4-Alkoxy-1,1,1-trifluoro[chloro]alk-3-en-2-ones as Selective Protecting Groups of Amino Acids - Zanatta, Nilo; Squizani, Adriana M C; Fantinel, Leonardo; Nachtigall, Fabiane M; Bonacorso, Helio G; Martins, Marcos A P (Synthesis, 2002)