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Preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline

A technology for sulfopropyl betaine and dimethylaminomethyl benzene is applied in the field of preparing 4--aniline, can solve the problems of limited night work, solar cells are affected by sunlight, unstable energy output, etc., and achieves a simple process. Effect

Pending Publication Date: 2019-04-19
四川宝马河科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In today's increasingly scarce energy, solar cells are affected by sunlight, the energy output is unstable, cloudy, and night work is limited
The temperature difference thermocouple battery requires a large temperature difference, and the work efficiency is low, and the acidity difference thermal energy battery just overcomes their shortcomings, and can continue to work without external supplements

Method used

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  • Preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline
  • Preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline
  • Preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline

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Embodiment 1

[0044] Such as figure 1 Shown, a kind of method for preparing 4-(2-hydroxy-sulfopropyl betaine)--aniline is characterized in that, comprises:

[0045] Step 1, preparing intermediate product dimethylaminomethylbenzene;

[0046] In step one, add benzene and polyoxymethylene in the Erlenmeyer flask, inject water, add catalyst BF 3 , placed in a heat-collecting magnetic stirring pot, add methyl silicone oil into the magnetic stirring pot, heat at 60-80°C, stir for 1-1.5h, involving reaction (1); cool to 20-30°C, then add dimethylamine Aqueous solution, stirred and reacted for 1.5-2.0h, involving reaction (2); under the condition of 110°C-120°C and pressure of 1300-1500Pa, dehydrating the product under reduced pressure to finally obtain the intermediate product dimethylaminomethylbenzene, involving reaction (3 )

[0047]

[0048] Step 2, preparing 4-(2-hydroxy-sulfopropyl betaine)-nitrobenzene;

[0049] Use the dimethylaminomethylbenzene prepared by reaction (3) in step 1 to r...

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Abstract

The invention discloses a preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline. The water solubility of aniline and nitrobenzene is small, after galvanic reactions, the transfer amount is very little; due to the hydrogen bonds, the water solubility of p-amino phenyl alanine and p-nitro phenyl alanine is small; after sulfobetaine is combined with aniline and nitrobenzene, the solubilityis increased, moreover, the sulfobetaine group is electrically neutral and will not influence the pH value of an acid / alkali solution, and 4-(2-hydroxyl-sulfopropylbetaine)-aniline can be used to produce an acidity difference thermal battery. The invention provides a novel preparation method of 4-(2-hydroxyl-sulfopropylbetaine)-aniline.

Description

technical field [0001] The invention relates to the field of energy technology, and more specifically, relates to a method for preparing 4-(2-hydroxy-sulfopropyl betaine)-aniline. Background technique [0002] At present, when energy is increasingly scarce, solar cells are affected by sunlight, and their energy output is unstable. On cloudy days, work at night is limited. The temperature difference thermocouple battery requires a large temperature difference and has low working efficiency, while the acidity difference thermal energy battery just overcomes their shortcomings, and can continue to work without external supplements. And 4-(2-hydroxy-sulfopropyl betaine)-aniline is one of the key materials needed for acidity difference thermal energy battery. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a new method for preparing 4-(2-hydroxy-sulfopropyl betaine)-nitrobenzene-aniline. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/38C07C33/22C07C213/00C07C215/28C07C209/68C07C211/27C07C303/32C07C309/24
CPCC07C29/38C07C209/68C07C213/00C07C303/32C07C33/22C07C215/28C07C211/27C07C309/24
Inventor 敬林
Owner 四川宝马河科技有限公司
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