| 摘要 |
<p>Unsymmetrically substituted triphenylenes required in the synthesis of polymeric discotic liquid crystals are made using iron (III) chloride in organic solvent at room temperature to effect the oxidative coupling of 1,2-dialkoxybenzenes to 3,3',4,4'-tetraalkoxybiphenyls. This is followed by a reductive workup. The same oxidation-reduction protocol also proves effective in the trimerisation of 1,2-dialkoxybenzenes.</p> |
