Ruthenium (II)-Catalyzed Trifluorochloropropylidenation of Silyl Enol Ethers. A Facile Method for the Preparation of Trifluoromethyl-Containing Carbonyl Compounds - Okano, Takashi; Uekawa, Toru; Sawaki, Hisataka; Eguchi, Shoji (Synlett, 1990)