2-Hydroxy-1,3-xylyl-18-crown-5   、                                                                                      
<10-(p-aminophenoxy)-2,5,8-trioxadecyl>-15-crown-5                                                                                                                                                              在
                                                                                                                                                                                 
盐酸   、                                                                                                  
sodium hydroxide   、                                                                                                  sodium nitrite                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 19-[4-(2-{2-[2-(1,4,7,10,13-Pentaoxa-cyclopentadec-2-ylmethoxy)-ethoxy]-ethoxy}-ethoxy)-phenylazo]-3,6,9,12,15-pentaoxa-bicyclo[15.3.1]henicosa-1(20),17(21),18-trien-21-ol