【Abstract】 Difluoro-4-alkoxyphenols were prepared from 2,3-difluoro-4-alkoxy bromobenzene with Mg, B(OCH 3) 3 and H 2O 2 at -30 ℃. Three ester liquid crystal compounds were synthesized by their esterification with 4-(trans-4′-alkylohexyl) compounds. The structures of the liquid crystal compounds were confirmed by IR, 1H NMR, MS and elemental analysis and the phase transition temperatures were measured by DSC.更多还原