Oxidation of Biginelli Reaction Products: Synthesis of 2-Unsubstituted 1,4-Dihydropyrimidines, Pyrimidines, and 2-Hydroxypyrimidines - Kim, Sam Sik; Choi, Bo Seung; Lee, Jae Hoon; Lee, Ki Kon; Lee, Tae Hee; Kim, Young Ho; Shin, Hyunik (Synlett, 2009)