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pillar[6]arene can be targeted as the major product of the friedel-crafts cyclooligomerization by using bulky alkoxy groups on the monomer, switching the lewis acid catalyst or by using a bulky chlorinated solvent. ogoshi and coworkers reported the synthesis of a pillar[6]arene with 1,4-bis(methylcyclohexyl ether)phenylene units in an 87% yield by using chlorocyclohexane as the solvent. the bulky chlorinated solvent was suggested to act as a template for the formation of the larger pillar[n]arene.









































section::::synthesis.:higher pillar[n]arenes.









































the higher pillar[n]arene homologues, pillar[6-15]arene, have been synthesized through the ring expansion of pillar[5]arene.









































section::::biomedical applications.
pillararene