Polyacid-based metal organic framework material, synthesis method thereof and application thereof in photo-catalytic oxidation benzylamine coupling

A technology of benzylamine oxide coupling and organic framework, which is applied in organic compound/hydride/coordination complex catalysts, catalytic reactions, organic chemistry, etc., and can solve problems such as poor stability, low yield, and expensive catalysts. Achieve the effect of good performance, high activity and optimal reaction time

Active Publication Date: 2020-10-30
HENAN UNIVERSITY
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Problems solved by technology

However, these catalysts are generally limited in application due to many factors such as high price, poor stability, low yield, and the need for high temperature.

Method used

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  • Polyacid-based metal organic framework material, synthesis method thereof and application thereof in photo-catalytic oxidation benzylamine coupling
  • Polyacid-based metal organic framework material, synthesis method thereof and application thereof in photo-catalytic oxidation benzylamine coupling
  • Polyacid-based metal organic framework material, synthesis method thereof and application thereof in photo-catalytic oxidation benzylamine coupling

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Embodiment 1

[0037] A polyacid-based metal organic framework material (SiW-Cu-DPNDI), the chemical formula of the organic framework material is: {Cu 4 (C 26 h 16 N 4 o 4 ) 4 (CH 3 EN) 2 [SiW 12 o 40 ]}•4H 2 O.

[0038] The synthetic method of above-mentioned polyacid-based metal-organic framework material, it is made of DPNDI, copper acetate monohydrate and Na 10 [ α -SiW 9 o 34 ]·18H 2 O is obtained by reacting under hydrothermal conditions, specifically comprising the following steps:

[0039] 1) Preparation of vacant Keggin-type polyacid Na 10 [α-SiW 9 o 34 ]·18H 2 O, prepared according to literature method (Gilbert Hervé, André Tézé, Study of α- and β-Enneatungstosilicates and -germanates, Inorg.Chem. 1977, 168, 2115-2117);

[0040] 2) Prepare the reaction raw material DPNDI, and refer to the literature method for synthesis (Guo-Bi Li, Jun-Min Liu, Zhi-QuanYu, Wei Wang, Cheng-Yong Su, Assembly of a 1D coordination polymer through insitu formation of a new ligand by d...

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Abstract

The invention discloses a polyacid-based metal organic framework material. The chemical formula of the organic framework material is {Cu4 (C26H16N4O4) 4 (CH3CN) 2 [SiW12O40]}. 4H2O, the invention further provides application of the polyacid-based metal organic framework material in photocatalytic oxidation benzylamine coupling, wherein, specifically, molecular oxygen are taken as an oxidizing agent, efficient catalytic oxidation benzylamine coupling is carried out under the mild illumination condition, the yield of the generated product N-benzylidene aniline is very high, and very high activity is shown. Furthermore, due to high stability, the organic framework material is recovered and repeatedly used for at least four times, and the yield is not obviously changed.

Description

technical field [0001] The invention belongs to the technical field of preparation of polyacid-based metal-organic framework chemical materials, and specifically relates to a new polyacid-based metal-organic framework material, a synthesis method and its application in photocatalytic oxidation of benzylamine coupling. Background technique [0002] As important intermediates in the synthesis of pharmaceuticals, dyes and agricultural chemicals, imines and their derivatives have received extensive attention in recent years. In this context, several catalysts such as 2-iodobenzoic acid, ruthenium-based and gold-based catalysts have been investigated for benzylamine coupling reactions. However, these catalysts are generally limited in application due to many factors such as high price, poor stability, low yield, and high temperature requirement. The photocatalytic oxidative coupling of benzylamines to imines at low temperature and atmospheric pressure provides a mild route. Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/22C07C249/02C07C251/24
CPCB01J31/1691B01J2231/70B01J2531/16C07C249/02C08G83/008C07C251/24
Inventor 李明雪韩秋霞李杰方颜司晨
Owner HENAN UNIVERSITY
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