2-[2,4-dichloro-5-(2-propynyloxy)phenyl]-2,4-dihydro-5-(3-oxo-propyl)-3H-1,2,4-triazol-3-one                                                                                                                                                              在
                                                                                                                                                                                 diethylaminosulfur trifluoride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 2,5,6,7-tetrahydro-2-[2,4-dichloro-(2-propynyloxy)phenyl]-5-fluoro-3H-pyrrolo[2,1-c]-1,2,4-triazol-3-one   、                                                                                             2-[2,4-dichloro-5-(2-propynyloxy)phenyl]-2,4-dihydro-5-(3,3-difluoropropyl)-3H-1,2,4-triazol-3-one