1-Methyl-3-(5-nitro-2-furyl)pyrazol-4-carboxaldehydoxim   、                                                                                      
乙酸酐                                                                                                                                                                                              以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以to obtain 1-methyl-3-(5-nitro-2-furyl)pyrazole-4-carboxaldehyde-(O-acetyloxime) [m.p. 192° to 197° C (with decomposition) from toluene] with a yield of 83%的产率得到1-methyl-3-(5-nitro-2-furyl)pyrazole-4-carboxaldehyde-(O-acetyloxime)