One-Pot Synthesis of Trifluoromethyl-Containing Pyrazoles via Sequential Yb(PFO)3-Catalyzed Three-Component Reaction and IBX-Mediated Oxidation - Shen, Li; Zhang, Jian; Cao, Song; Yu, Jinlong; Liu, Nianjin; Wu, Jingjing; Qian, Xuhong (Synlett, 2008)