A series of novel bisphosphinoamine ligands:Synthesis,characterization and application in ethylene tetramerization  

作　　者：JIANG Tao CHEN HongXia CAO ChenGang MAO GuoLiang NING YingNan 

机构地区：[1]College of Material Science and Chemical Engineering, Tianjin University of Science & Technology, Tianjin 300457, China [2]Department of Chemistry and Chemical Engineering, Daqing Petroleum Institute, Daqing 163318, China

出　　处：《Chinese Science Bulletin》2010年第33期3750-3754,共5页

基　　金：supported the Program for New Century Excellent Talents in University(NCET-07-0142);the Program for New Century Excellent Talents in Heilongjiang Provincial University(NCET-06-010);the National Natural Science Foundation of China(20972025);the Science Foundation of Tianjin University of Science & Technology(20090420)

摘　　要：A series of novel N-halogen-substituted-aryl bisphosphinoamine ligands were synthesized and characterized by elemental analysis,1H NMR and mass spectrometry.The combination of these ligands with Cr(Ⅲ) and activation by methylaluminoxane leads to highly active catalytic systems for the tetramerization of ethylene to form 1-octene.The catalytic activities and product selectivi-ties depend on the aryl ring substituents and the reaction conditions.We found that the location and size of the substituents are important in determining the catalytic activity and selectivity toward 1-octene.This trend is similar to that observed for their alkyl-substituted analogues.A series of novel N-halogen-substituted-aryl bisphosphinoamine ligands were synthesized and characterized by elemental analysis, 1H NMR and mass spectrometry. The combination of these ligands with Cr（Ⅲ） and activation by methylaluminoxane leads to highly active catalytic systems for the tetramerization of ethylene to form 1-octene. The catalytic activities and product selectivi- ties depend on the aryl ring substituents and the reaction conditions. We found that the location and size of the substituents are important in determining the catalytic activity and selectivity toward 1-octene. This trend is similar to that observed for their alkyl-substituted analogues.

关 键 词：催化体系 配体 合成 乙烯 表征 甲基铝氧烷 元素分析 核磁共振 

分 类 号：O641.4[理学—物理化学] TQ333.2[理学—化学]