Accurate degradation method of polyalkyne ester compound

A compound, polyalkynyl ester technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of high temperature catalyst effect, etc., and achieve the effect of simple degradation method

Active Publication Date: 2020-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing polymer degradation methods require extremely high temperature and catalyst action, so it is of great significance to explore simple and gentle degradation methods

Method used

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  • Accurate degradation method of polyalkyne ester compound
  • Accurate degradation method of polyalkyne ester compound
  • Accurate degradation method of polyalkyne ester compound

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The polyalkyne ester compound P1 of the present embodiment, its structural formula is as follows:

[0048]

[0049] The above-mentioned polyalkyne ester compounds can be synthesized according to the synthesis method of the applicant in the authorized invention patent (patent number: ZL201610973824.6).

[0050] The reaction equation of the accurate degradation of the polyalkyne ester compound described in the present embodiment is as follows:

[0051]

[0052] Concrete preparation steps are as follows:

[0053] Add P1 (57.8mg, 0.1mmol, M w =80300g / mol,M w / M n =2.56), benzamidine (24.2mg, 0.2mmol), add toluene 1mL, at this moment, the degradation product obtained can be separated out easily, is convenient to just can purify by simple filtration and washing.

[0054] Route 1: react at 110°C for 12 hours, then cool to room temperature, filter and wash the precipitate with ethanol to obtain the degradation product pyrimidinone compound 4. The filtered solution wa...

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Abstract

The invention belongs to the technical field of polymer degradation, and discloses an accurate degradation method of a polyalkyne ester compound. The accurate degradation method comprises the following steps: carrying out accurate degradation reaction on the polyalkyne ester compound and benzamidine in an organic solvent, and carrying out subsequent treatment to obtain a diazacyclo ketone compoundand a diol compound, wherein the diazacyclo ketone compound is an imidazolone compound and / or a pyrimidone compound; and the degradation reaction is carried out in a normal-pressure air environment.The method is simple and can be carried out in a normal-pressure air environment, a catalyst is not needed, a degradation product is easy to purify, and the structure can be regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of organic degradation, and in particular relates to a precise degradation method of polyalkyne ester compounds. Background technique [0002] Man-made polymers such as plastics, rubber and fibers are widely used nowadays, but when they are discarded, they have caused more and more serious impact on the environment due to their non-degradable characteristics. Therefore, it is of great significance to develop degradation methods for polymer materials. [0003] At present, a variety of degradable polymer materials have been synthesized. Most of them have unknown structures after degradation, and it is difficult to recycle them again, which is not in line with the concept of sustainable development. Therefore, the development of precise degradation of polymers and the recyclability of degradation products are current research hotspots. Li Zichen et al. (Lv A., Cui Y., Du F.S., etal. Thermally degradable polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D239/36C07D233/96C07C29/09C07C31/20C09K11/06A01N43/54A01P1/00A61P31/04G01N21/64B01J20/22B01J20/30
CPCC07D239/36C07D233/96C07C29/095C09K11/06A01N43/54A61P31/04G01N21/6428B01J20/22C09K2211/1044C07C31/20Y02W30/62
Inventor 唐本忠秦安军宋波
Owner SOUTH CHINA UNIV OF TECH
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