tetrahydro-3,5-bis[[3-(trifluoromethyl)phenyl]methylene]-4H-thiopyran-4-one-1,1-dioxide   、                                                                                      
丙基肼                                                                                                                                                                                              以
                                                                                         
甲醇   、                                                                                         pentoxide                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 2-propyl-7-(3-trifluoromethyl-benzylidene)-3-(3-trifluoromethyl-phenyl)-2,3,3a,4,6,7-hexahydro-thiopyrano[4,3-
c]pyrazole 5,5-dioxide