... (C) The Chemical Society of Japan 1983 ONE-STEP SYNTHESIS OF OXAZOLES FROM KETONES AND NITRILES USING COPPER (II) TRIFLUOROMETHANESULFONATE AS A KEY REAGENT Kazuo NAGAYOSHI and Tadashi SATO* Department of Applied Chemistry, Waseda University, Ookubo 3, Shinjuku-ku, Tokyo 160 ... Page 2. 1356 Chemistry Letters, 1983 summarized in Table 1. The poorer yields in cases of the lower homologues might be ...