4-(3-amino-2-hydroxyphenyl)furan-2-carboxylic acid hydrobromide   、                                                                                      
sodium nitrite   、                                                                                      
5-methyl-2-(5,6,7,8-tetrahydronaphthalen-2-yl)-2,4-dihydropyrazol-3-one   、                                                                                      
碳酸氢钠                                                                                                                                                              在
                                                                                                                                                                                 ice water   、                                                                                                  
水   、                                                                                                  
乙酸乙酯   、                                                                                                  
(Z)-4-(2-hydroxy-3-{N'-[3-methyl-5-oxo-1-(5,6,7,8-tetrahydronaphthalen-2-yl)-1,5-dihydropyrazol-4-ylidene]hydrazino}phenyl)furan-2-carboxylic acid                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
盐酸   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 24.33h,
                                                                                                                以to obtain the title compound (Z)-4-(2-hydroxy-3-{N′-[3-methyl-5-oxo-1-(5,6,7,8-tetrahydro-naphthal-2-yl)-1,5-dihydro-pyrazol-4-ylidene]-hydrazino}-phenyl)-furan-2-carboxylic acid 22f (13 mg, yield 5.5%) as a red solid的产率得到(Z)-4-(2-hydroxy-3-{N'-[3-methyl-5-oxo-1-(5,6,7,8-tetrahydronaphthalen-2-yl)-1,5-dihydropyrazol-4-ylidene]hydrazino}phenyl)furan-2-carboxylic acid