Dialkylaluminium complexes derived from 1,8-diphenyl-3,6-dimethylcarbazole: a new sterically hindered monodentate ligand system

被引：23
|
作者：
Spitzmesser, SK [1 ]
Gibson, VC [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2003年 / 673卷 / 1-2期
关键词：
aluminium; carbazole; ethylene; polymerisation;
D O I：
10.1016/S0022-328X(03)00174-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new type of sterically hindered, monodentate ligand system based on the carbazolide frame is introduced. (1,8-diphenyl-3,6-dimethylcarbazolide)AlR2 (4, R = Me; 5, R = Et) complexes have been prepared by N-lithiation of the carbazole, followed by reaction with the appropriate dialkylaluminium chloride. Treatment of the dialkyl complexes 4 and 5 with B(C6F5)3 or [H(OEt2)(2)][B{3,5-(CF3)(2)C6H3}(4)] affords [LAlR](+) species followed by products arising from alkyl/Ar-F exchange. The cationic alkylaluminium species are found to oligomerise ethylene to C-4-C-10 olefinic products. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：95 / 101
页数：7
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