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mops supported bidentate chelate metal catalyst and preparation method thereof

A metal catalyst, chelating technology, applied in the field of MOPs loaded bidentate chelating metal catalyst and its preparation

Active Publication Date: 2021-06-04
陕西元亨医药科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metal nanoparticles on MOPs are combined with MOPs through coordination, so the stability of functionalized MOPs itself needs to be improved urgently.

Method used

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  • mops supported bidentate chelate metal catalyst and preparation method thereof
  • mops supported bidentate chelate metal catalyst and preparation method thereof
  • mops supported bidentate chelate metal catalyst and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0077] One embodiment of the present invention also provides a method for preparing any one of the above-mentioned MOPs-supported bidentate chelate metal catalysts, including the following steps S1-S2.

[0078] Step S1: Mix compound (II), benzene, dimethoxymethane and 1,2-dichloroethane at -5°C to 5°C, then add iron salt as a catalyst and react at 80°C to 85°C for 20 hours After ~30h, polymer (Ⅲ) was obtained.

[0079] Wherein, the structures of compound (II) and polymer (III) are as follows:

[0080]

[0081] where R 3 is H, methyl or aryl, when n=0, R 3 not H; X 2 Is a halogen anion; Ar, R 2 The definition is as above. Among them, the aryl group is, for example, phenyl group.

[0082] is a substituted or unsubstituted aromatic or heteroaromatic ring of 5 to 6 ring atoms. specifically, Attached to the benzene ring via a methylene group, Aromatic or heteroaromatic rings of 5 to 6 ring atoms in may be further substituted, for example Aromatic or heteroaromatic...

application example 1

[0144] The (I-1)MOPs-Pd prepared in Example 1 was used to catalyze the Suzuki coupling reaction.

[0145] First weigh 2.5mmol halogenated arene (a), 4mmol arylphenylboronic acid (b) and 5mmol K 3 PO 4 , put it into a round bottom flask for use, then add 50 mg of the prepared MOPs supported bidentate chelate metal catalyst (I-1), finally measure 15 mL of ethanol and 15 mL of water into the round bottom flask, and stir evenly. The reaction system was then transferred to an oil bath at 80°C, and reacted under magnetic stirring for 1.0 hour; after the reaction was complete, the stirring was stopped, cooled to room temperature, filtered, dried, and purified by column chromatography to obtain the product (c).

[0146] The equation for the above catalytic reaction is shown below, with the corresponding catalyst on the right:

[0147]

[0148] The following table 4 shows the application examples 1-20 of the MOPs supported bidentate chelate metal prepared by the present invention an...

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Abstract

The invention relates to a MOPs-supported bidentate chelate metal catalyst and a preparation method thereof. The catalyst has the structure of general formula (I): wherein, Ar is an aromatic or heteroaromatic ring with 5 to 6 ring atoms; is a substituted or unsubstituted aromatic or heteroaromatic ring of 5 to 6 ring atoms; each X 1 Independently selected from the halogen anion, acetate, nitrate and sulfate; n is an integer, R 1 is H, methyl or substituted or unsubstituted aryl, and when n=0, R 1 not H; R 2 is H or alkyl; M is transition metal. The above-mentioned MOPs-supported bidentate chelate metal catalyst has the structure of general formula (I), wherein M and the organic framework form a six-membered cyclic ligand, so the M and the organic framework have stronger coordination ability, so that MOPs The supported bidentate chelate metal catalyst has higher stability.

Description

technical field [0001] The invention relates to the technical field of synthesis, in particular to a MOPs loaded bidentate chelate metal catalyst and a preparation method thereof. Background technique [0002] Organic microporous polymers (MOPs) are a class of materials composed of organic elements and containing a large number of interpenetrating or closed pores in the structure. Organic microporous polymers have the advantages of small density, high specific surface area, easy structure control, and strong chemical activity. They can be widely used in adsorption and storage, separation and purification, heterogeneous catalysis, photoelectric devices, etc., involving new energy, environment Protection, chemical industry, information industry and other fields. The advantages of functionalized MOPs in heterogeneous catalysis are more obvious, mainly reflected in: 1) MOPs as a carrier can effectively prevent the agglomeration of metal nanoparticles, so that they can still mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07B37/04C07C1/32C07C17/263C07C41/30C07C253/30C07F1/00C07F15/00C07F15/02C07F15/04C07F1/08C07C15/14C07C25/18C07C43/205C07C255/50
CPCB01J31/1691B01J31/183B01J31/2243B01J2231/4227B01J2531/16B01J2531/821B01J2531/824B01J2531/842B01J2531/847C07B37/04C07C1/321C07C17/263C07C41/30C07C253/30C07F1/005C07F15/0053C07F15/0066C07F15/025C07F15/045C07C15/14C07C25/18C07C43/205C07C255/50
Inventor 向德轩刘希徐伟郭建陈迪钊胡扬剑欧阳跃军李元祥林红卫汤艳李大团
Owner 陕西元亨医药科技有限责任公司