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Chiral metal complex catalyst

A technology of chiral catalysts and metal complexes, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, catalytic reactions, etc. Low efficiency and other problems, to avoid poisoning of users, stable properties, and beneficial to recycling

Pending Publication Date: 2019-01-04
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a metal complex chiral catalyst, which aims to solve the problem that the loading mode of the metal complex has a great influence on the catalytic effect, and the recycling rate of the chiral complex is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] A sponge-loaded chiral metal complex, the sponge-loaded chiral complex is made of a sponge, a silylating agent, a chiral ligand, and copper, wherein the sponge is polydimethyl Siloxane sponge (PDMS), the silylating agent is vinyltrimethoxysilane with propylene oxide modified at the end group, and the chiral ligand is L-cysteine ​​shown in the following formula, and The silylating agent is supported on the surface of the sponge by reacting with the surface hydroxyl groups of the sponge, and the chiral ligand is bonded to the carboxyl group of the silylating agent through a covalent bond and connected to the surface of the sponge. Wherein, the structure of the chiral ligand is shown below, and the effect diagram of the chiral complex catalyst supported by the sponge is shown in figure 1 shown.

[0076]

Embodiment 2

[0078] A sponge-loaded chiral metal complex, the sponge-loaded chiral complex is made of a sponge, a silylating agent, a chiral ligand, and copper, wherein the sponge is polydimethyl Silicone sponge (PDMS), the Linker reagent is vinyltrimethoxysilane with propylene oxide modified at the end group, and the chiral ligand is (1R, 2R)-cyclohexanedi amine, and the silylating agent is loaded on the surface of the sponge by reacting with the surface hydroxyl of the sponge, and the chiral ligand is bonded and connected to the modified silylating agent through a covalent bond. Sponge surface. Wherein, the structure of the chiral ligand is shown below, and the effect diagram of the chiral complex supported by the sponge is shown in figure 2 shown.

[0079]

Embodiment 3

[0081] A sponge-loaded chiral metal complex, the sponge-loaded chiral complex is made of a sponge, a silylating agent, a chiral ligand and copper, wherein the sponge is polydimethyl Siloxane sponge (PDMS), the silylating agent is vinyltrimethoxysilane modified with propylene oxide at the end group, and the chiral ligand is (1R, 2R)-cyclohexyl as shown in the following formula Diamine and salicylaldehyde, and the silylating agent is loaded on the surface of the sponge by reacting with the surface hydroxyl groups of the modified sponge, and the chiral ligand is covalently bonded to the modified silanized The amino group and carboxyl group of the reagent are sequentially bonded and connected on the surface of the sponge. Wherein, the structure of the chiral ligand is shown below, and the effect diagram of the chiral complex supported by the sponge is shown in image 3 shown.

[0082]

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Abstract

The invention provides a chiral metal complex catalyst. The chiral metal complex catalyst is a supported chiral catalyst comprising a sponge substrate and a chiral metal complex loaded on the sponge substrate, the chiral metal is loaded on the sponge substrate through a Linker reagent, the sponge substrate is a polymer framework of a 3D (three-dimensional) porous structure and comprises a surfaceactive group A, the chiral metal complex comprises a chiral ligand and metal in coordinate bond with the chiral ligand, the chiral ligand comprises an active group B, the metal is a transition-state elementary metal substance, a transition-state metal alloy or transition-state metal ions, the Linker reagent at least comprises a first active functional group C and a second active functional group D, the first active functional group C is capable of combining with the surface active group A, and the second active functional group D is capable of combining with the active group B.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a metal complex chiral catalyst. Background technique [0002] Catalysts are commonly used reagents in organic synthesis, and they are usually used in small amounts, enabling the reaction to be completed in a short period of time with a high yield. By loading the catalyst, the recovery of valuable or polluted catalysts can be achieved, reducing pollution and waste. However, with the continuous development of organic synthesis technology, the types of catalysts are constantly enriched, and there are higher requirements for the use of catalysts. Sometimes, in order to achieve a greener reaction system, achieve asymmetric catalysis, and atomic economics, materials can be used to support chiral ligands combined with metal-catalyzed reaction systems, so that chiral ligands and some precious metals can be recycled. Chiral complexes have been studied extensively, and it is a breakthrough to l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C201/12C07C205/45
CPCC07C201/12B01J31/2217B01J31/226C07C2601/14C07B2200/07B01J2531/18B01J2531/16B01J2531/0238B01J2531/0213B01J2231/34C07C205/45
Inventor 张俊民解维维罗宇
Owner SHENZHEN UNIV
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