描述:
                                
                                                                                                                         1',1',1'',1'',8,12,16,18,27,31,35,37-dodecamethyldispiro<1,6,20,25-tetraoxa<6.1.6.1>paracyclophane-13,4':32,4''-bispiperidinium> bis(fluorosulfonate)                                                                                                                                                              在
                                                                                                                                                                                 ion exchange resin                                                                                                                                  作用下,
                                                                                                                                                                                                                            以68%的产率得到1',1',1'',1'',8,12,16,18,27,31,35,37-dodecamethyldispiro<1,6,20,25-tetraoxa<6.1.6.1>paracyclophane-13,4':32,4''-bispiperidinium> dichloride