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A synthetic method of a medicine raw material 3,3-dimethylcyclohexanone

A technology of dimethylcyclohexanone and a synthesis method, which is applied in the synthesis field of 3,3-dimethylcyclohexanone, a pharmaceutical raw material, can solve problems such as the synthesis method of unreported compounds, and achieves simple synthesis method and safe operation. Effect

Inactive Publication Date: 2016-07-13
WUXI QIANHAO BIOPHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 3,3-Dimethylcyclohexanone is the starting material for the synthesis of many drugs, especially the starting material for many cyclohexanone compounds. At present, there is no report on the synthesis method of this compound in China

Method used

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Embodiment Construction

[0008] The synthetic method of pharmaceutical raw material 3,3-dimethylcyclohexanone of the present invention is specifically as follows:

[0009] At a temperature of 170-200°C, a pressure of 1-1.4 atmospheres, and a pH of 5-6, the raw material cyclohexanone is subjected to secondary methylation to generate 3,3-dimethylcyclohexanone. The purity of this crude product can meet the general reaction requirements and can be directly put into the reaction.

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Abstract

The invention relates to a synthetic method of a medicine raw material 3,3-dimethylcyclohexanone. The method includes subjecting cyclohexanone that is a raw material to twice methylation at 170-200 DEG C under 1-1.4 atmospheric pressures with pH being 5-6 to generate the 3,3-dimethylcyclohexanone. The method is simple, efficient, safe in operation and particularly practical in practical production.

Description

technical field [0001] The invention relates to a method for synthesizing 3,3-dimethylcyclohexanone as a medical raw material. Background technique [0002] 3,3-Dimethylcyclohexanone is the starting material for the synthesis of many drugs, especially the starting material for many cyclohexanone compounds. At present, there is no report on the synthesis method of this compound in China. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a simple, efficient and safe synthetic method for pharmaceutical raw material 3,3-dimethylcyclohexanone. [0004] The purpose of the present invention is achieved like this: [0005] A method for synthesizing pharmaceutical raw material 3,3-dimethylcyclohexanone. Under the action of temperature 170-200°C, pressure 1-1.4 atmospheres, and pH 5-6, the raw material cyclohexanone is passed through dimethyl cyclohexanone After conversion, 3,3-dimethylcyclohexanone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C49/403C07C45/68
Inventor 彭海燕
Owner WUXI QIANHAO BIOPHARMA