描述:
1',1',1'',1'',8,16-hexamethyldispiro<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79%的产率得到1',1',1'',1'',8,16-hexamethyldispiro<1,6,20,25-tetraoxa<6.1.6.1>paracyclophane-13,4':32,4''-bispiperidinium> dichloride