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Preparation method and application of palladium nanoparticle catalyst

A technology of palladium nanoparticles and catalysts, which is applied in the preparation of organic compounds, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of complex reaction steps and high reaction temperature of palladium nanoparticles, and achieves high catalytic activity and Selectivity, high chiral conversion, easy-to-obtain results

Active Publication Date: 2015-05-20
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of palladium nanoparticles usually requires complex reaction steps, high reaction temperature, and in order to prevent the generation of palladium black, it is usually necessary to add a stabilizer in the reaction system

Method used

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  • Preparation method and application of palladium nanoparticle catalyst
  • Preparation method and application of palladium nanoparticle catalyst
  • Preparation method and application of palladium nanoparticle catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Preparation of palladium nanoparticles

[0021] Pd(OAc) was sequentially added to the reaction tube 2 (0.03mmol), phenylboronic acid (0.2mmol), tetrahydrofuran (0.6mL), react at 20°C for 1 hour. Obtain palladium nanoparticles, particle size is 2.6nm (as figure 1 shown).

Embodiment 2

[0022] Embodiment 2: Preparation of palladium nanoparticles

[0023] Pd(OAc) was sequentially added to the reaction tube 2 (0.06mmol), p-tolylboronic acid (0.2mmol), tetrahydrofuran (0.6mL), react at 60°C for 30 minutes. Palladium nanoparticles were obtained with a particle size of 2.2 nm.

Embodiment 3

[0024] Embodiment 3: the preparation of palladium nanoparticles

[0025] Pd(OAc) was sequentially added to the reaction tube 2 (0.06mmol), m-methoxyphenylboronic acid (0.12mmol), water (0.6mL), react at 50°C for 1 minute. Obtain palladium nanoparticles, particle size is 2.0nm (as figure 2 shown).

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Abstract

The invention provides a preparation method and application of a palladium nanoparticle catalyst. The palladium nanoparticle catalyst is prepared through the action of palladium acetate and boric acid compounds. Palladium nanoparticles prepared by using the method provided by the invention are uniformly distributed in various solvents, the preparation method is simple, raw materials are convenient and easily obtained, and reaction conditions are mild. The palladium nanoparticle catalyst is applied to the coupling reaction of allyl carbonate and an arylboronic acid without adding organic ligands and other stabilizers, and is high in catalytic activity and chiral conversion rate.

Description

technical field [0001] The invention relates to the preparation and application of a catalyst in the technical field of chemical industry, in particular to a preparation method and application of a palladium nanoparticle catalyst. Background technique [0002] Nano-metal particle catalysts have been widely used in organic synthesis reactions. Among them, nano-palladium catalysts are widely used in the cross-coupling reactions of important carbon-carbon bonds such as Heck and Suzuki because of their excellent catalytic activity [(a) M.Perez-Lorenzo, J.Phys.Chem.Lett.2012,3,167 ; (b) A. Fihri, M. Bohrara, B. Nekoueishahraki, J.-M. Basset, V. Polshettiwar, Chem. Soc. Rev. 2011, 40, 5181; (c) D. Astruc, Inorg. Chem. 2007, 46, 1884.]. Palladium nanoparticle catalysts often have good catalytic activity in cross-coupling reactions, do not require ligand activation, and are green and practical catalysts. However, the preparation of palladium nanoparticles usually requires complex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/44C07C1/32C07C15/50C07C15/58C07C41/30C07C43/215C07C69/76C07C67/343
Inventor 张勇健赵景明叶江
Owner SHANGHAI JIAO TONG UNIV
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