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Silicon-bridged metallocene complexes containing indenoindole structure and application of silicon-bridged metallocene complexes

A technology of metallocene complexes and indenoindole structures, which is applied in the field of preparation of olefin polymerization catalysts, can solve the problem of low isotacticity of polypropylene, and achieve the effects of simple preparation, broad application prospects and good controllability

Pending Publication Date: 2020-05-22
山东清河化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Riger et al. reported that a class of C1 symmetric metallocene complexes obtained higher molecular weight polypropylene, but the isotacticity of polypropylene was lower (Organometallics.2003, 22, 3495.)

Method used

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  • Silicon-bridged metallocene complexes containing indenoindole structure and application of silicon-bridged metallocene complexes
  • Silicon-bridged metallocene complexes containing indenoindole structure and application of silicon-bridged metallocene complexes
  • Silicon-bridged metallocene complexes containing indenoindole structure and application of silicon-bridged metallocene complexes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Ligand L1-1(2-methyl-4-3,5-bistrifluoromethyl-phenyl-indene)(N-methyl-5,10-hydrogen-indenoindole)dimethylsilyl preparation

[0044] Under a nitrogen atmosphere, 2-methyl-4-3,5-bistrifluoromethyl-phenyl-indene (3.42g / 10mmol) was dissolved in 50mL of anhydrous tetrahydrofuran, and n-butyl was slowly added at -78°C Lithium (2.5M, 4mL / 10mmol), then slowly rise to room temperature and continue to stir the reaction for 12 hours, add the lithium salt solution generated by the reaction at -78°C in the tetrahydrofuran solution of dimethyldichlorosilane (50mmol), gradually Stirring was continued for 12 hours after warming to room temperature. The solvent and excess dimethyldichlorosilane were removed under reduced pressure, and 50 mL of anhydrous tetrahydrofuran was added to the system. Meanwhile, the compound N-methyl-5,10-hydro-indenoindole (2.19 g / 10 mmol) was treated with n-butyllithium (2.5 M, 4 mL / 10 mmol) in the same manner at -78 °C Indenyllithium was generated, and th...

Embodiment 2

[0046] Ligand L1-2(2-methyl-4-3,5-bistrifluoromethyl-phenyl-indene)(N-phenyl-5,10-hydrogen-indenoindole)dimethylsilyl preparation

[0047] The experimental procedure was the same as in Example 1, and 5.78 g, 8.5 mmol of ligand L1-2 was obtained, yield: 85%. Anal. Calcd for C 41 h 31 f 6 NSi: C, 72.44; H, 4.60; N, 2.06. Found: C, 68.72; H, 5.12; N, 1.72.

Embodiment 3

[0049] Ligand L1-3(2-methyl-4-3,5-ditrifluoromethyl-phenyl-indene)(N-p-methylphenyl-5,10-hydrogen-indenoindole)dimethyl Preparation of base silicon

[0050] The experimental procedure was the same as in Example 1, and 6.04 g, 8.7 mmol of ligand L1-3 was obtained, yield: 87%. Anal. Calcd for C 42 h 33 f 6 NSi: C, 72.71; H, 4.79; N, 2.02. Found: C, 69.16; H, 5.18; N, 1.85.

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Abstract

The invention relates to a preparation method and application of a catalyst for an olefin polymerization reaction, especially to a preparation method and application of silicon-bridged metallocene complexes containing an indenoindole structure. According to the invention, molecules of the novel silicon-bridged metallocene complex containing the indenoindole structure designed by the invention contain various different substituted indenyl groups, so different chemical environments are provided for central metal, and metallocene complexes with a novel structure is constructed. By changing a skeleton structure and substituent groups, the three-dimensional effect and the electronic effect of the metallocene complex can be conveniently regulated and controlled, catalytic performance is regulated and controlled, and polyolefin high polymer materials with different structures and properties are prepared.

Description

technical field [0001] The present invention relates to a preparation method and application of a class of olefin polymerization catalysts, in particular to a preparation method and application of a silicon-bridged metallocene complex containing an indenoindole structure Background technique [0002] Cyclopentadiene and its derivatives coordinate with metals to form metal-organic complexes, commonly known as metallocene catalysts. Metallocene complexes show extremely high catalytic activity when combined with appropriate cocatalysts, and have made great progress in catalyzing olefin polymerization (W. Kaminsky, Metalorganic Catalysts for Synthesis and Polymerization, Berlin: Springer, 1999). [0003] Different positions can be substituted abundantly on the indene ring to obtain various types of indene derivatives (Halterman, R.L.Chem. Rev. 1992, 92, 965), bridged compounds synthesized by different combinations of various indene derivatives and Metallocene complexes prepared...

Claims

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Application Information

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IPC IPC(8): C07F17/00C08F10/00C08F110/06C08F110/02C08F210/16C08F4/6592
CPCC07F17/00C08F10/00C08F110/06C08F110/02C08F210/16C08F4/65927
Inventor 母瀛郑全德金鹿杨钧超赖麒尹志鹏谷传昶荆凯
Owner 山东清河化工科技有限公司
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