N2-(3,4-Dimethoxy-5-(methylthio)phenyl)-N4-(3-methoxyphenyl)-2,4-pyrimidinediamine   、                                                                                      
1-chloro-2,3-dimethoxy-5-nitro-benzene                                                                                                                                                              在
                                                                                                                                                                                 N2-(3-Chloro-4.5-dimethoxyphenyl)-N4-(3-methoxyphenyl)-2,4-pyrimidinediamine hydrochloride                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to give the desired product (0.85 g) as a white solid m.p. 66-68°的产率得到N2-(3-Chloro-4.5-dimethoxyphenyl)-N4-(3-methoxyphenyl)-2,4-pyrimidinediamine hydrochloride