相转移催化合成对苯乙炔聚合物(PPV)发光材料中间体1,4-二乙氧基苯的研究(PartⅠ)

Study on synthesis of p-phenylene vinylene polymer(PPV) photoluminescent material intermediate of 1,4-diethoxybenzene by phase transfer catalytic method

近年来二烷氧基取代对苯乙炔聚合物(PPV)发光功能材料广泛应用于液晶彩电、电脑、飞机彩色液晶显示屏中,本文研究了利用相转移催化反应在不同的催化剂反应条件下,合成二烷氧基取代对苯乙炔聚合物(PPV)发光功能材料的中间体1,4-二乙氧基苯,在氢氧化钠及催化剂HA-1存在下,对苯二酚与硫酸二乙酯于60～65℃反应3h条件下合成1,4-二乙氧基苯,产品收率达84%以上.对不同的催化剂的使用和反应时间进行了条件优化,对产品1,4-二乙氧基苯的IR谱图、1 H-NMR谱图进行了确认和详细分析.

In recent years Dialkoxyl substituted p-phenylene vinylene polymer(PPV) photoluminescent function materials were widely applied in LED(LCD) TV,computer,electrical equipments and aircraft color LED(LCD) displays,in this research we used different catalysts to synthesize Dialkoxyl substituted p-phenylene vinylene polymer(PPV) photoluminescent function materials intermediate of 1,4-Diethoxybenzene by phase transfer catalytic method,1,4-Diethoxybenzene was synthesized using hydroquinone and diethyl sulfate in toluene solvent in the presence of sodium hydrate and catalyst HA-1,by using different phase transfer catalysts,under conditions of reaction temperature of 60~65 ℃ and reaction time of 3.0 h,the product's yield was over 84%.The different catalysts usages and reation times were optimized and discussed,the product's IR spectra,NMR Spectra have been characterized and discussed in detail.