离子液体催化丙烯腈氯化合成2,3-二氯丙腈  

Synthesis of 2,3-Dichloropropionitrile from Chlorination of Acrylonitrile Catalyzed by Ionic Liquids

作　　者：李雪辉[1] 郑宾国[1] 赵荆感[1] 

机构地区：[1]华南理工大学化学工程系,广东省绿色化学产品技术重点实验室,广东广州5106400

出　　处：《催化学报》2006年第2期106-108,共3页

基　　金：国家自然科学基金(20206010);广东省自然科学基金(031419);广东省科技攻关项目(2002B21606;203C33503)

摘　　要：Ionic liquids formed by imidazolium and pyridinium cations with Cl-,Br-,BF-4,and PF-6 anions were used for the catalytic synthesis of（2,3-）dichloropropionitrile by the chlorination of acrylonitrile.The ionic liquids containing Cl-and Br-show good catalytic properties.The Cl-and Br-ions act as strong Lewis bases and molecular chlorine is activated by the induction effect of Cl-and Br-.Due to the stronger steric hindrance effect of the BF-4 and PF-6 anions,the chlorination of acrylonitrile is limited in the ionic liquids containing BF-4 and PF-6 anions.Ionic liquids formed by imidazolium and pyridinium cations with Cl^- , Br^- , BF4^- , and PF6^- anions were used for the catalytic synthesis of 2,3-dichloropropionitrile by the chlorination of acrylonitrile. The ionic liquids containing Cl^- and Br^- show good catalytic properties. The Cl^- and Br^- ions act as strong Lewis bases and molecular chlorine is activated by the induction effect of Cl^- and Br^-. Due to the stronger steric hindrance effect of the BF4 and PF6^- anions, the chlorination of acrylonitrile is limited in the ionic liquids containing BF4^- and PF6^- anions.

关 键 词：离子液体 丙烯腈 催化氯化 2 3-二氯丙腈 

分 类 号：O643.3[理学—物理化学] O623.76[理学—化学]