High-efficiency preparation method of p-benzoquinone compounds

A compound, p-benzoquinone technology, applied in the field of preparation of p-benzoquinone compounds, can solve problems such as pollution and equipment corrosion

Inactive Publication Date: 2015-08-19
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the acid corrodes the equipment seriously, and produces a large amount...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficiency preparation method of p-benzoquinone compounds
  • High-efficiency preparation method of p-benzoquinone compounds
  • High-efficiency preparation method of p-benzoquinone compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add hydroquinone (11.0g, 100mmol) and petroleum ether (32.5g, 50mL) into a 250mL two-necked flask, put -10 o Stir well in an ethylene glycol / dry ice bath in C, add lithium chloride (0.04 g, 1.0 mmol) and react in 1 atm air for 24 hours to obtain p-benzoquinone: 10.1 g.

Embodiment 2-5

[0018] Lithium chloride in embodiment 1 is replaced with other alkali / alkaline earth metal compounds, and the influence on result is shown in the following table:

[0019] project Main catalyst (g, mmol) p-Benzoquinone (g) 1. -- 0.5 2. Cesium nitrate (0.19, 1.0) 2.4 3. Calcium oxide (0.06, 1.0) 7.5 4. Barium carbonate (0.20, 1.0) 6.2

Embodiment 6-15

[0021] The sherwood oil in embodiment 1 is replaced with various solvents, and the impact on catalytic result is shown in the following table:

[0022]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a high-efficiency preparation method of p-benzoquinone compounds. According to the high-efficiency preparation method, a p-dihydroxybenzene compound is taken as a raw material, and the p-benzoquinone compounds are prepared in the presence of an alkali/alkali-earth metal catalyst. Advantages are that: 1) the high-efficiency preparation method is simple, and amplification of operation processes and industrialized production can be realized easily; 2) a plurality of the p-benzoquinone compounds can be synthesized, and the high-efficiency preparation method is an universal method used for preparing the p-benzoquinone compounds.

Description

technical field [0001] The invention relates to a method for preparing p-benzoquinone compounds, in particular to a catalyst capable of highly selectively catalyzing hydroquinone compounds to prepare p-benzoquinone compounds in an oxygen-containing atmosphere. Background technique [0002] P-benzoquinone compounds are a kind of fine chemical raw materials with wide application and high added value. They can be directly used as raw materials in pesticides, dyes and other industries, and can also be used as intermediates in rubber antioxidants, pesticides, dyes, and antioxidants. Synthesis of chemical products such as polymerization inhibitors. For example, p-benzoquinone can be used directly as an antioxidant for rubber, and can also be used as a synthetic intermediate for the synthesis of rubber antioxidants, pesticides, dyes, and polymerization inhibitors for polymer monomers; trimethyl-p-benzoquinone can be used as a vitamin E Synthetic intermediates are also widely use...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C50/04C07C50/02C07C46/08
CPCC07C46/08C07C50/02C07C50/04
Inventor 安增建万晓波
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap