N-(1-ethyl-3-methyl-2,4-dioxo-6-prop-2-enylpyrimidin-5-yl)-4-methylbenzenesulfonamide   、                                                                                      
2-(bromomethyl)-1-iodo-4-nitrobenzene                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                                                        以80%的产率得到N-(6-allyl-1-ethyl-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-N-(2-iodo-5-nitrobenzyl)-4-methylbenzenesulfonamide