Dialkylaluminium complexes derived from 1,8-diphenyl-3,6-dimethylcarbazole: a new sterically hindered monodentate ligand system
作者:Stefan K. Spitzmesser、Vernon C. Gibson
DOI:10.1016/s0022-328x(03)00174-8
日期:2003.4
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][B3,5-(CF3)2C6H3}4] affords [LAlR]+
介绍了一种基于咔唑内酯骨架的新型位阻单齿配体系统。(1,8-二苯基-3,6-二甲基咔唑)AlR 2(4,R = Me;5,R = Et)配合物是通过咔唑的N-锂化反应,然后与适当的氯化二烷基铝反应而制备的。用B(C 6 F 5)3或[H(OEt 2)2 ] [B 3,5-(CF 3)2 C 6 H 3 } 4 ]处理二烷基络合物4和5得到[LAIR] +物种之后是烷基/ Ar F交换产生的产物。阳离子物种烷基铝被发现乙烯低聚至C 4 C 10烯烃产物。