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Small experiment synthesis method of cyclobutane tetracarboxylic acid

A technology of cyclobutanetetracarboxylic acid and synthesis method, which is applied in the preparation of carboxylate/lactone, organic chemistry, etc., to achieve the effects of speeding up the reaction, causing environmental pollution and high yield

Inactive Publication Date: 2014-05-07
TIANJIN LAIXI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of existing organic compound synthesis methods, the invention provides a small-scale synthesis method of cyclobutane tetracarboxylic acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Embodiment: Get 20g of dimethyl fumarate and put it into a beaker, then put the ultraviolet light on the inner wall of the beaker and place it vertically, and seal the mouth of the beaker; connect the power supply of the constant temperature water bath heater, adjust the temperature at 25°C, and then seal Put the beaker into the water bath and heat it. After the dimethyl fumarate in the beaker is completely sublimated and produces a lot of smoke, turn on the ultraviolet lamp, and the dimethyl fumarate gas will immediately generate cyclobutane tetracarboxylic acid after being irradiated by the ultraviolet lamp. Proceed normally; after 30 minutes of reaction, when the smoke in the beaker disappears and solids are no longer produced on the inner wall of the beaker, turn off the ultraviolet light, take the beaker out of the constant temperature water bath heater, turn off the power supply of the constant temperature water bath heater, and place the beaker in the In the fume ...

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PUM

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Abstract

The invention relates to a small experiment synthesis method of cyclobutane tetracarboxylic acid, wherein a beaker filled with a dimethyl fumarate solid is placed in a water bath furnace and is heated so as to make the dimethyl fumarate sublimate, and then an ultraviolet light is adopted to irradiate so as to synthesize the cyclobutane tetracarboxylic acid. With the small experiment synthesis method, the dimethyl fumarate can completely react, and the reaction speed is substantially accelerated, such that the cyclobutane tetracarboxylic acid yield is high; and use of the solvent is not required, harm on health of laboratory personnel can not be generated, and environmental pollution can not be generated.

Description

(1) Technical field [0001] The invention relates to a method for synthesizing organic matter, in particular to a method for synthesizing cyclobutane tetracarboxylic acid on a small scale. (2) Background technology [0002] At present, the current method for the synthesis of cyclobutane tetracarboxylic acid from dimethyl fumarate is mainly to dissolve dimethyl fumarate in a flask with an organic solvent, then heat to make the organic solvent evaporate completely, and then dissolve the fumarate Dimethyl fumarate is crystallized on the entire wall of the flask, and then dimethyl fumarate is cyclized by ultraviolet irradiation to generate cyclobutane tetracarboxylic acid. Due to the relatively large thickness and uneven distribution of the crystals, it is difficult for ultraviolet rays to penetrate the surface of the crystals to reach the clean interior, so the reaction speed is slow and the material loss is also large, which reduces the production efficiency. At the same time,...

Claims

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Application Information

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IPC IPC(8): C07C61/04C07C51/09
CPCC07C51/09C07C2601/04
Inventor 曹淦堃
Owner TIANJIN LAIXI TECH
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