1,3-dimethylperimidinium perchlorate                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  
磺酰氯                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 
6-chloro-1,3-dimethyl-2,3-dihydroperimidine   、                                                                                             4,6,7-trichloro-1,3-dimethyl-2,3-dihydroperimidine   、                                                                                             
6,7-dichloro-1,3-dimethyl-2,3-dihydro-1H-perimidine   、                                                                                             
4,9-dichloro-1,3-dimethyl-2,3-dihydro-1H-perimidine