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2-Benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine cobalt complex and its preparation method and application

A technology based on benzimidazolyl and tetrahydroquinoline, applied in the direction of organic compound/hydride/coordination complex catalysts, hydrocarbons, hydrocarbons, etc., can solve the problems of limited metal catalysts and achieve high catalytic activity , extensive industrial application prospects, high selectivity effect

Active Publication Date: 2021-04-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These all limit the practical application of metal catalysts to a certain extent.

Method used

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  • 2-Benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine cobalt complex and its preparation method and application
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  • 2-Benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine cobalt complex and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1: Preparation of 2-benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine-(2,6-dimethylanilino) cobalt chloride (II) [coordination Object C1]

[0048]

[0049] Add 158mg 2-benzimidazolyl-5,6,7,8-tetrahydroquinolin-8-one (0.6mmol), 87mg 2,6-dimethylaniline (0.72mmol ) and 74mg anhydrous CoCl 2 (0.57mmol), then add 10mL glacial acetic acid, configure magnetic stirring and spherical condenser, heat and reflux for 8h, produce a large amount of green floc, stop heating, cool down to room temperature, transfer the reaction solution into a one-necked bottle, and pass through the rotary evaporator After concentrating to a small amount of liquid, add 10mL ether to the one-mouth bottle, configure magnetic stirring, and stir at room temperature for 10 minutes to produce a large amount of green flocs. After standing until the flocs sink to the bottom, absorb the upper solvent through the dropper, and repeat This step was performed three times, and finally filtered and dri...

Embodiment 2

[0051] Embodiment 2: Preparation of 2-benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine-(2,6-diethylanilino) cobalt chloride (II) [coordination Object C2]

[0052]

[0053] Add 158mg 2-benzimidazolyl-5,6,7,8-tetrahydroquinolin-8-one (0.6mmol) and 107mg 2,6-diethylaniline (0.72mmol) respectively to a 25mL oblique two-neck flask and 74 mg anhydrous CoCl 2 (0.57mmol), then add 10mL glacial acetic acid, configure magnetic stirring and a spherical condenser, heat and reflux for 8h, a large amount of brown flocs are produced, stop heating, cool down to room temperature, transfer the reaction solution into a single-necked bottle, and pass through a rotary evaporator After concentrating to a small amount of liquid, add 10mL ether to the one-port bottle, configure magnetic stirring, and stir at room temperature for 10 minutes to produce a large amount of brown flocs. After standing until the flocs sink to the bottom, absorb the upper solvent through the dropper, repeat This step ...

Embodiment 3

[0055] Example 3: Preparation of 2-benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine-(2,6-diisopropylanilino)cobalt chloride (II)[ Complex C3]

[0056]

[0057] Add 158mg 2-benzimidazolyl-5,6,7,8-tetrahydroquinolin-8-one (0.6mmol), 127mg 2,6-diisopropylaniline (0.72mmol ) and 74mg anhydrous CoCl 2 (0.57mmol), then add 10mL glacial acetic acid, configure magnetic stirring and a spherical condenser, heat and reflux for 8h, a large amount of brown flocs are produced, stop heating, cool down to room temperature, transfer the reaction solution into a single-necked bottle, and pass through a rotary evaporator After concentrating to a small amount of liquid, add 10mL ether to the one-port bottle, configure magnetic stirring, and stir at room temperature for 10 minutes to produce a large amount of brown flocs. After standing until the flocs sink to the bottom, absorb the upper solvent through the dropper, repeat This step was performed three times, and finally filtered and dried...

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PUM

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Abstract

The present invention has designed and synthesized 2-benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine cobalt complex catalyst (I) containing N^N^N ligand, the metal The complex is used to catalyze the oligomerization of ethylene, showing high catalytic activity, and the obtained dimerization and trimerization products with high selectivity can reach 7.73×10 5 g·mol –1 (Co)·h –1 , and the complex exhibits high selectivity and has broad industrial application prospects;

Description

[0001] (1) Technical field [0002] The invention relates to a 2-benzimidazolyl-5,6,7,8-tetrahydroquinoline-8-imine cobalt complex and a preparation method and application thereof. [0003] (2) Background technology [0004] Polyethylene is the world's fastest growing synthetic resin with the largest output and a wide range of uses. It is widely used in many fields such as industry, agriculture, military, medical and health care, and daily life. At present, industrialized polyethylene catalysts have Ziegler-Natta type catalysts (DE Pat 889229 (1953); IT Pat 536899 (1955) and IT Pat 545332 (1956); Chem.Rev., 2000,100,1169 and the relevant literature of this special edition ), Phillips-type catalysts (Belg.Pat.530617 (1955); Chem.Rev.1996, 96, 3327) and metallocene-type catalysts (W.Kaminsky, MetalorganicCatalysts for Synthesis and Polymerization, Berlin: Springer, 1999), and in recent years Development of highly efficient ethylene oligomerization and polymerization catalysts of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/06C07C2/22B01J31/22C08F110/02C08F4/70
Inventor 胡信全黄永峰孙文华马艳平张然荻
Owner ZHEJIANG UNIV OF TECH
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