Triphenylene is a member of the family of polycyclic aromatic hydrocarbons,which has the advantages of large conjugate structure and high electron migration rate,as well as the stable structure of disc-shaped liquid crystal polymer materials,high mechanical strength,good liq-uid crystal performance and so on.Therefore,triphenylene and their derivatives are widely used in organic photoelectric materials,high-strength materials,selective permeable membrances and other different fields.In this paper,an intermediate 1,5,9-triphenylene was synthesized through Ullman reaction,reduction reaction and diazotization from the cheap and easily available raw material 2,3-dichlorotronylbenzene.which can be used by follow-up researchers to synthesize other triphenylene derivatives and their polymers.It has a high number of reactive sites due to the presence of halogen atoms and can be directly applied in the synthesis of other triphenylene derivatives and polymers.
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