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...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.展开更多
文摘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.
