Preparation for aniline, phenol and derivative thereof

A technology of aniline derivatives and benzene derivatives, which is applied in the preparation of organic compounds, the preparation of amino compounds, chemical instruments and methods, etc., can solve the problems of difficult sources, lack of practical significance, and high reaction temperature

Inactive Publication Date: 2003-06-18
翟和生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The above methods have achieved some results from different aspects, but there are different problems, such as low efficiency of phenol, expensive catalyst, high reaction temperature, and used oxidant (such as N 2 O) The source is not easy and inconvenient to use
Therefore, there is no practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] 1. Preparation of Ti solution

[0043] Weigh 75.6g of oxalic acid and dissolve it in 300ml of water, heat to 60°C, and slowly add 68ml of tetra-n-butyl titanate dropwise under vigorous stirring. At this point a clear solution was obtained. After standing still, there is a layer of yellow oily liquid on the upper layer, which is sucked off with a straw. Add more water to 400ml. In this way, a mixed solution of 1.5M oxalic acid+0.5M tetra-n-butyl titanate was obtained.

[0044] 2. Preparation of metal oxides

[0045] 12g Cu(NO 3 ) 2 ·H 2 O dissolved in 20ml H 2 O, add 40ml of 30% polyacrylic acid solution (average molecular weight is 2000). After stirring evenly, this solution was slowly added dropwise into 100ml of the above Ti solution. This gave a pale green colloidal solution. The colloidal solution was heated at 110°C for 8 hours and then moved into a muffle furnace. The temperature of the muffle furnace rose from room temperature to 500°C within 4 hours, a...

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PUM

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Abstract

A process for preparing phenylamine or phenol and its derivative includes such steps as the benzene or the benzen containing substituents reacting on bromine to obtain bromobenzen or the bromobenzene containing substituents, and reacting on the oxide and / or hydroxide of metal to obtain phenylamine or its derivative containing substituent or reacting on the oxide and / or hydroxide of metal and H2O to obtain phenol and its derivative containing substituents, as well as water as by-product. Its advantages are cyclic use of bromine and metal oxide, high conversion rate and high selectivity.

Description

Technical field: [0001] The invention belongs to a preparation method of aniline, phenol and derivatives thereof. Background technique: [0002] (1) Aniline, commonly known as Alini oil, is a colorless oily liquid. Aniline is one of the important organic chemical raw materials. The United States, Western Europe and Japan are the major aniline consumption countries and regions in the world, accounting for about 80% of the world's total consumption. In the consumption structure of these countries and regions, the consumption of MDI ranks first, accounting for about 80% of the total consumption. MDI is one of the raw materials for producing polyurethane. Aniline can also be used to prepare rubber additives (accounting for about 11% of aniline consumption), dyes and organic pigments (accounting for about 3%). In addition, aniline can also be used in industrial fields such as pesticides, medicines and special fibers. [0003] At present, the production process of aniline inc...

Claims

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Application Information

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IPC IPC(8): C07C37/02C07C209/10
CPCC07C37/02C07C209/10
Inventor 翟和生
Owner 翟和生
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