One-pot Preparation of 2,6-Disubstituted 4-(Trifluoromethyl)pyrimidines via the Tandem Cyclization, Dehydration, and Oxidation Reaction of α,β-Unsaturated Trifluoromethyl Ketones Using POCl3-Pyridine-Silica Gel and MnO2 Systems - Funabiki, Kazumasa; Nakamura, Hiroko; Matsui, Masaki; Shibata, Katsuyoshi (Synlett, 1999)