多聚磷酸催化对乙基月桂苯酮合成及其结构鉴定  

Synthesis of 1-(4-ethylphenyl) dodecan-1-one with PPA and characterization of its structure

作　　者：赵宇[1] 李鹏飞[1] 李宗石[1] 乔卫红[1] 程侣柏[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《大连理工大学学报》2006年第5期652-654,共3页Journal of Dalian University of Technology

基　　金：国家"九七三"重点基础研究专项资助项目

摘　　要：苯酮是三次采油用烷基苯磺酸盐表面活性剂的重要中间体,传统的三氯化铝作催化剂活性较高,使得副产物多难以分离.采用多聚磷酸代替三氯化铝作温和的催化剂合成了对乙基月桂苯酮,取得了很好的结果,精制产品的气相色谱纯度达93%以上.给出了产品的熔点和沸点数据.通过红外、核磁共振波谱等分析手段证明其结构正确,气质联用证明相对分子质量相吻合.并推断了多聚磷酸F riede l-C rafts酰化反应的机理.Alkylbenzenephone is a very important intermediate of alkylbenzenesulfonate surfactant for the tertiary-enhanced oil recovery. AlCl3 is very frequently used in Friedel-Crafts reaction according to the reference. But many side reactions occurred because of its high activity. Polyphosphoric acid （PPA） is used in place of AlCl3 as a milder catalyst, 1-（4-ethylphenyl） dodecan-1-one was synthesized with the purity higher than 93 %. Its melting point, boiling point were measured too. Its structure was proved to be right by IR, ^1H NMR and right relative molecular mass was testified by GC-MS. The mechanism of the Friedel-Crafts acylation reaction was also predicted.

关 键 词：对乙基月桂苯酮 FRIEDEL-CRAFTS反应 酰基化 多聚磷酸 

分 类 号：O625.4[理学—有机化学]