[6-(4-phenyl-4,5-dihydro-1H-pyrazole-3-carbonyl)pyridin-2-yl]-(4-phenyl-4,5-dihydro-1H-pyrazol-3-yl)methanone                                                                                                                                                              在
                                                                                                                                                                                 
盐酸   、                                                                                                  sodium nitrite                                                                                                                                  作用下,
                                                                                                                                                                                                                            以65%的产率得到[6-(2-nitroso-4-phenyl-3,4-dihydropyrazole-5-carbonyl)pyridin-2-yl]-(2-nitroso-4-phenyl-3,4-dihydropyrazol-5-yl)methanone