Synthesis of 2-Substituted Pyrimidines via Cross-Coupling Reaction of Pyrimidin-2-yl Sulfonates with Nucleophiles in Polyethylene Glycol 400 - Wang, Xi-Cun; Yang, Guo-Jun; Quan, Zheng-Jun; Ji, Peng-Yan; Liang, Jun-Ling; Ren, Rong-Guo (Synlett, 2010)