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Synthetic method of medicine raw material namely 1,4-dibromopyridine

A technology for the synthesis of dibromopyridine and its synthesis method, which is applied in the field of synthesis of pharmaceutical raw material 1,4-dibromopyridine, which can solve problems such as the synthesis method of unreported compounds, and achieve the effect of simple synthesis method and safe operation

Inactive Publication Date: 2016-11-16
WUXI QIANHAO BIOPHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 1,4-Dibromopyridine is the starting material for the synthesis of many drugs, especially the important intermediates of many pyridine compounds. There is currently no report on the synthesis of this compound in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The synthetic method of pharmaceutical raw material 1,4-dibromopyridine of the present invention is specifically as follows:

[0009] Using 1,4-dichloropyridine as raw material, 1,4-dibromopyridine is prepared by halogenation method, and then further methylated to obtain the desired product 1,4-dibromopyridine. The purity of this crude product can meet the general reaction requirements and can be directly put into application.

[0010] It is prepared by using 1,4-dichloropyridine as raw material, anhydrous potassium fluoride as fluorinating agent, and fluorine substitution reaction under the action of certain solvent and catalyst.

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Abstract

The invention relates to a synthetic method of a medicine raw material namely 1,4-dibromopyridine. According to the synthetic method, 1,4-dichloropyridine is used as a raw material, 1,4-dibromopyridine is prepared by a halogenation method, and then methylation is further performed so that the 1,4-dibromopyridine is obtained. The synthetic method of the medicine raw material namely the 1,4-dibromopyridine disclosed by the invention is simple, efficient, safe to operate and quite practical in specific production.

Description

technical field [0001] The invention relates to a method for synthesizing medical raw material 1,4-dibromopyridine. Background technique [0002] 1,4-Dibromopyridine is the starting material for the synthesis of many drugs, especially the important intermediates of many pyridine compounds. There is no report on the synthesis of this compound in China. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned shortcomings, and provide a simple, efficient and safe synthesis method of pharmaceutical raw material 1,4-dibromopyridine. [0004] The purpose of the present invention is achieved like this: [0005] A method for synthesizing pharmaceutical raw material 1,4-dibromopyridine, using 1,4-dichloropyridine as a raw material to obtain 1,4-dibromopyridine by a halogenation method, and then further methylating to obtain 1,4- Dibromopyridine. [0006] Compared with prior art, the beneficial effect of the present invention is: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/61
CPCC07D213/61
Inventor 彭海燕
Owner WUXI QIANHAO BIOPHARMA