2,2,4-三甲基-1,3-戊二醇双苯甲酸酯类Z-N催化剂内给电子体的合成与应用  

Synthesis and application of 2,2,4-trimethyl-1,3-pentanediol dibenzoate as internal electron donor in Z-N catalyst

作　　者：孙文姣[1] 刘敏[1] 许文倩[1] 李效军[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《化学试剂》2011年第1期65-68,共4页Chemical Reagents

摘　　要：由异丁醛和苯甲酰氯为原料经缩合、歧化、酯化合成了4种新型内给电子体化合物2,2,4-三甲基-1,3-戊二醇双苯甲酸酯,重点考察了酯化反应的影响因素。实验表明,该内给电子体的适宜合成条件为:醇与苯甲酰氯的物质的量比为1∶2.3;催化剂三乙胺与苯甲酰氯的物质的量比为3.0∶1;反应时间为13 h;后处理时,用5%NaOH水溶液洗涤30 min可除去三乙胺和过量的酰氯,苯甲酸酯的收率最高可达93.0%,HPLC纯度>99.0%。用于丙烯聚合时催化剂催化活性可达到52 kgPP/gcat,同时聚丙烯的等规度为96.50,熔融指数18.24。Four novel compounds of 2,2,4-trimethyl-1,3-pentanediol dibenzoate functioning as internal donor were synthesized from isobutyraldehyde and benzoyl chloride through condensation,disproportionation and esterification.The key effects of esterification were studied.The optimum reaction conditions were as follows：the molar ratio of 2,2,4-trimethyl-1,3-pentanediol and benzoyl chloride was 1∶2.3;the molar ratio of triethylamine and benzoyl chloride was 3.0∶1;and the reaction time was 13 h.The product was washed with 5% NaOH aqueous solution for 30 min to remove triethylamine and surplus benzoyl chloride,and the yield of diesters reached 93.0% with its purity（analyzed by HPLC） exceeding 99.0%.The catalytic activity reached 5.2 kg of PP/g of catalyst when it was used for propylene polymerization,and the isotacticity of polypropylene was 96.50,with the melt index equating to 18.24.

关 键 词：内给电子体 2 2 4-三甲基-1 3-戊二醇双苯甲酸酯 合成 应用 

分 类 号：O625.5[理学—有机化学]