PSA-PS在反-5-戊基-2-(4-氰基苯基)-1,3-二噁烷合成中的应用  

Application of PSA-PS in the preparation of trans-5-pentyl-2-(4-cyanophenyl)-1,3-dioxanes

作　　者：杨妮妮 杨永忠 刘骞峰 高仁孝 

机构地区：[1]西安瑞联近代电子材料有限责任公司,陕西西安710065

出　　处：《应用化工》2008年第4期462-464,共3页Applied Chemical Industry

摘　　要：以苯基磺酸官能化中孔硅基材料(PSA-PS)为催化剂,对氰基苯甲醛和2-戊基丙二醇为原料,催化合成了5-戊基-2-(4-氰基苯基)-1,3-二噁烷的顺、反混合物。并以同样的PSA-PS催化转型、重结晶后,得到反-5-戊基-2-(4-氰基苯基)-1,3-二噁烷纯品,收率83%。此外,在缩合反应中,对比对甲苯磺酸和氯化钙,使用PSA-PS催化可使反应时间缩短一半。PSA-PS在缩合、转型反应中可重复使用4次。Under the catalyze of phenyl sulfonic acid functionalized mesoporous silica （PSA-PS）, the mixture of cis and trans-5-pentyl-2-（4-cyanophenyl）-1,3 dioxanes was prepared by 2-pentyl-1,3-propandiol and 4-cyanobenzaldehyde,then the mixture was isomerized by the same catalyst. After recrystal, the pure trans-5-pentyl-2-（4-cyanophenyl）-1,3 dioxanes with 83% yield was obtained. Furthermore, in the condensation reaction ,compared with toluenesulfonic acid and calcium chloride, using PSA-PS can save half of the reaction time. PSA-PS can be reused four times in both condensation and isomerization reaction.

关 键 词：液晶 苯基磺酸官能化中孔硅基材料 反-5-戊基-2-(4-氰基苯基)-1 3-二噁烷 

分 类 号：TQ032.42[化学工程]