5-(2-Methyl-pyrimidin-5-ylmethyl)-2-thioxo-2,3-dihydro-1H-pyrimidin-4-one   、                                                                                      
sodium ethanolate   、                                                                                      
碘甲烷                                                                                                                                                              在
                                                                                                                                                                                 
水                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 35.5h,
                                                                                                                以to afford 5-(2-methyl-pyrimidin-5-ylmethyl)-2-methylsulfanyl-1H-pyrimidin-4-one (85 mg, yield=36.6%, purity=96%) in form of white powder的产率得到5-(2-methyl-pyrimidin-5-ylmethyl)-2-methylsulfanyl-1H-pyrimidin-4-one