Synthesis of Functionalized l-Cysteine and l-Methionine by Reaction with Electron-Deficient Acetylenes - Trofimov, Boris A.; Mal’kina, Anastasiya G.; Shemyakina, Olesya A.; Nosyreva, Valentina V.; Borisova, Angela P.; Khutsishvili, Spartak S.; Krivdin, Leonid B. (Synthesis, 2009)