A Convenient and Regioselective Synthesis of 4-Trifluoromethylpyridines - Katsuyama, Isamu; Ogawa, Seiya; Yamaguchi, Yoshihiro; Funabiki, Kazumasa; Matsui, Masaki; Muramatsu, Hiroshige; Shibata, Katsuyoshi (Synthesis, 1997)