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Barbier-reaction-based method for preparing high molecules

A polymer and reaction technology, applied in the field of polymer preparation, can solve problems that have not been reported in the field of polymer synthesis, and achieve the effects of mild conditions, strong operability, and simple synthesis process

Active Publication Date: 2017-05-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past 100 years, although the Barbier reaction has been widely used in the field of organic chemistry, its application in the field of polymer synthesis has not been reported yet.

Method used

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  • Barbier-reaction-based method for preparing high molecules
  • Barbier-reaction-based method for preparing high molecules
  • Barbier-reaction-based method for preparing high molecules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The present embodiment provides a kind of method that 4-bromoacetophenone prepares polymer by barbier self-condensation polymerization, comprises the steps:

[0057] (1) Synthesis of crude polymer products

[0058] Take a 100mL double-necked flask, coat the mouth with vacuum grease, plug it with a rubber stopper, and wrap it tightly with insulating tape to ensure good airtightness. Add magnesium chips (0.288g, 0.012mol) into the double-necked flask from the straight mouth, add magnets, and connect the condenser tube and straight air extraction joint in sequence (all joints need to be coated with vacuum grease and clamped with plastic clips). Repeat the process of evacuating, blowing, cooling, and passing nitrogen three times. After passing the nitrogen gas for the last time, close the straight-shaped air extraction joint, connect a balloon filled with nitrogen gas, and then open the plug of the straight-shaped air extraction joint to make the nitrogen gas communicate. ...

Embodiment 2

[0064] This embodiment provides a kind of method that 2-bromoacetophenone prepares polymer by barbier self-condensation polymerization, comprises the steps:

[0065] (1) Synthesis of crude polymer products

[0066] Take a 100mL double-necked flask, coat the mouth with vacuum grease, plug it with a rubber stopper, and wrap it tightly with insulating tape to ensure good airtightness. Add magnesium chips (0.288g, 0.012mol) into the double-necked flask from the straight mouth, add magnets, and connect the condenser tube and straight air extraction joint in sequence (all joints need to be coated with vacuum grease and clamped with plastic clips). Repeat the process of evacuating, blowing, cooling, and passing nitrogen three times. After passing the nitrogen gas for the last time, close the straight-shaped air extraction joint, connect a balloon filled with nitrogen gas, and then open the plug of the straight-shaped air extraction joint to make the nitrogen gas communicate.

[006...

Embodiment 3

[0072] This embodiment provides a method for preparing polymers through Barbier polycondensation reaction between dibenzoylmethane and 1,2-bis(bromomethyl)benzene, comprising the following steps:

[0073] (1) Synthesis of crude polymer products

[0074] Take a 100mL double-necked flask, coat the mouth with vacuum grease, plug it with a rubber stopper, and wrap it tightly with insulating tape to ensure good airtightness. Add magnesium chips (0.528g, 0.022mol) into the double-necked flask from the straight mouth, add magnets, and connect the condenser tube and straight air extraction joint in sequence (all joints need to be coated with vacuum grease and clamped with plastic clips). Repeat the process of evacuating, blowing, cooling, and passing nitrogen three times. After passing the nitrogen gas for the last time, close the straight-shaped air extraction joint, connect a balloon filled with nitrogen gas, and then open the plug of the straight-shaped air extraction joint to mak...

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Abstract

The invention discloses a Barbier-reaction-based method for preparing high molecules. The method introduces Barbier reaction into the field of high molecule preparation, takes halogen and carbonyl groups as reaction groups, belongs to a one-pot polycondensation method, is simple and easy to implement and high in operability, can prepare high-molecular materials of different structures at low cost and is a mild high-molecule synthesis method. The Barbier reaction which is environment-friendly is successfully introduced into the field of high molecule preparation, range of chemical structure and characteristic of existing high molecules will be expanded, and a brand-new field for designing functional high-molecular materials is created.

Description

technical field [0001] The invention belongs to the technical field of polymer preparation methods, and in particular relates to a method for preparing polymers based on the Barbier reaction. Background technique [0002] The synthesis reaction of carbon-carbon bond has always played a very important role in the field of organic chemistry. In the past few decades, many typical reactions of carbon-carbon bond synthesis have been applied in the field of polymer synthesis, including atom transfer radical addition reaction, radical addition-fragmentation reaction, olefin metathesis reaction, Suzuki coupling and Stille coupling reaction. Union and so on. Introducing the synthesis reaction of small molecule carbon-carbon bonds into the field of polymer preparation is of great significance to the development of the chemical structure and properties of polymer materials, and has become one of the hot research topics for polymer chemists. [0003] The Barbier reaction refers to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/02C08G61/04
CPCC08G61/02C08G61/04C08G2261/11C08G2261/124C08G2261/1422C08G2261/148C08G2261/228C08G2261/312C08G2261/3326C08G2261/354
Inventor 万文明刘东明吕新虎李康康田娣
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)