2-甲基咪唑   、                                                                                      2-chloro-6-ethyl-4-(3,4-dichlorobenzylamino)-thieno-[2,3-d]-pyrimidine                                                                                                                                                                                                                                                                                                          以gives 2-(2-methylimidazol-1-yl)-6-ethyl-4-(3,4-dichlorobenzylamino)-thieno-[2,3-d]-pyrimidine的产率得到2-(2-methylimidazol-1-yl)-6-ethyl-4-(3,4-dichlorobenzylamino)thieno[2,3-d]pyrimidine