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N,O-single ligand metal catalyst with stereochemical structure and preparation method thereof

A metal catalyst and three-dimensional structure technology, applied in the direction of organic chemistry, etc., can solve the problems of poor tolerance and low activity of polar monomers, and achieve the effects of low dielectric constant, high light transmittance, and good thermal stability.

Inactive Publication Date: 2012-04-04
横峰县虹联铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the metal center of Ziegler-Natta catalyst and metallocene catalyst is an early transition metal, which has poor tolerance to polar monomers and has low activity when catalyzing polar norbornene monomers.

Method used

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  • N,O-single ligand metal catalyst with stereochemical structure and preparation method thereof
  • N,O-single ligand metal catalyst with stereochemical structure and preparation method thereof
  • N,O-single ligand metal catalyst with stereochemical structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (I) Preparation of α-ketophenylimine ligands with three-dimensional structure.

[0041] Add 0.0143 mol of 9,10-dihydro-9,10-ethylene anthracene-11,12-dione, 0.0143 mol of aniline, and a catalytic amount of p-toluene into the reaction flask equipped with a reflux condenser and a water separator Sulfonic acid and 150 mL of toluene were used as solvents. After reacting for 2 hours, the novel stereoscopic α-ketobenimine ligand with a purity of more than 99% was obtained by recrystallization from n-hexane or distillation under reduced pressure.

[0042] (II) Preparation of mono(α-ketophenylimine)nickel(II) with three-dimensional structure of the main catalyst.

[0043] -78 o C slowly add the solution of n-butyllithium dissolved in toluene and n-hexane to the toluene containing the ligand prepared in step I, and the molar ratio of the two is 1:1. Then wait for the temperature of the mixture to slowly return to room temperature, and stir for 2 h. Then add 1 equivalent of t...

Embodiment 2

[0047] (I) Preparation of α-ketophenylimine ligands with three-dimensional structure.

[0048] With embodiment 1.

[0049] (II) Preparation of mono(α-ketophenylimine)palladium(II) complexes with the stereostructure of the main catalyst.

[0050] -78 o C slowly add the solution of n-butyllithium dissolved in toluene and n-hexane to the toluene containing the ligand prepared in step I, the molar ratio of the two is 1:1. Then wait for the temperature of the mixture to slowly return to room temperature, and stir for 2 h. Then add 1 equivalent of trans-[Pd(PPh 3 ) 2 (Ph)Cl]. Stir continuously overnight at room temperature, filter, and recrystallize to obtain a mono(α-ketophenylimine)palladium(II) complex with a new stereostructure.

[0051] (III) Catalytic polymerization of norbornene.

[0052] Heat the reaction bottle equipped with a magnetic stirrer and a branch with a heat gun, and simultaneously vacuumize it, fill it with nitrogen, and replace it three times to ensure th...

Embodiment 3

[0054] (I) Preparation of α-keto(2,6-dimethyl)phenylimine ligand with three-dimensional structure.

[0055] Add 0.0143 mol of 9,10-dihydro-9,10-ethylene anthracene-11,12-dione, 0.0143 mol of 2,6-dimethyl Aniline, a catalytic amount of p-toluenesulfonic acid and 200 mL of toluene were used as solvents. After reacting for 4 hours, recrystallize with n-hexane or distill under reduced pressure to obtain the α-keto(2,6-dimethyl)phenylimine ligand with a purity of more than 99%.

[0056] (II) Preparation of mono[α-keto(2,6-dimethyl)phenylimine]nickel(II) complex with stereostructure of procatalyst.

[0057] -78 o C slowly add the solution of n-butyllithium dissolved in toluene and n-hexane to the toluene containing the ligand prepared in step I, the molar ratio of the two is 1:1. Then wait for the temperature of the mixture to slowly return to room temperature, and stir for 2 h. Then add 1 equivalent of trans-[Ni(PPh 3 ) 2 (Ph)Cl]. Stir continuously overnight at room temperat...

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Abstract

The invention relates to an N,O-single ligand metal catalyst with a stereochemical structure shown in the description and a preparation method thereof. The catalyst has the following structure general formula, wherein M represents a nickel, palladium, cobalt, iron or copper central metal atom; R1 represents bromine, chlorine, iodine, methyl, propyl, butyl, phenyl, naphthyl, methoxy or ethyoxyl; R2 represents aromatic amine or fatty amine; and R3 represents phenyl, naphthyl, bromine or methyl. The catalyst disclosed by the invention has high light transmission, high glass-transition temperature, excellent thermal stability and oxidation stability, low moisture rate, low permittivity and excellent processability, solubility property and blocking property.

Description

Technical field [0001] The present invention is a catalyst and preparation technology field, which specializes in the main catalyst and preparation method for catalytic systems for bonus convergence of bennenenenes and benne derivatives. Background technique [0002] With the development of industry, polyethylefin materials have attracted widespread attention with their excellent performance.Crowdhene is a typical cyclone material. It has three aggregation methods: (1) Open ring polymerization. The main chain obtained by this aggregation method contains dual keys.; (2) Code or free radical agglomeration. This method is to connect the single through 2,7-bit, but only a polymer with a lower molecular weight can be obtained;The bonus aggregation performed by double -key, the main chain contains the double ring structure (US Patent 5468819, 5569730).Among them, the addition of the bonatrogenhene, the average polymer has good optical properties, thermal stability, chemical stability, ...

Claims

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Application Information

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IPC IPC(8): C08F4/70C08F232/08C07F19/00
Inventor 贺晓慧陈义旺王凯悌姚溢琼
Owner 横峰县虹联铝业有限公司
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