科研之友
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摘要
This work reveals a novel reaction route deviated from a Scholl coupling reaction with an interrogation into the mechanism. A catalytic function of FeCl3 in the presence of protons plays a key role in the new reaction. It was discovered that by increasing the quantity of reagent FeCl3 is able to shift the reaction product from a symmetrically hexa-substituted coupling one to a mono-hydrolysed coupling product. The discovery offers a chance to explore and understand the reaction mechanism further. The new reaction enables a convenient one-step synthesis of mono-hydroxy-penta-alkoxytriphenylene, a key discotic liquid crystal intermediate for organic electronic materials, from a simple 1,2-dialkoxybenzenes reactant at a yield up to 65%.
