Synthesis method for medicinal raw material 2-chloro-4-ethoxyl-6-methylpyrimidine

Abstract

The invention relates to a synthesis method for a medicinal raw material 2-chloro-4-ethoxyl-6-methylpyrimidine. According to the synthesis method, methylpyrimidine serves as a raw material, and under the effect of solvent n-butyl alcohol and 1.5 atmospheric pressure, the 2-chloro-4-ethoxyl-6-methylpyrimidine is generated sequentially through ethylation, an oxidation reaction and a chlorine replacement reaction at 100-145 DEG C under catalysis of vanadium pentoxide. The synthesis method for the medicinal raw material 2-chloro-4-ethoxyl-6-methylpyrimidine is simple, efficient, safe to operate, quite practical in concrete production and capable of meeting common reaction requirements.

Description

technical field [0001] The invention relates to a synthesis method of medical raw material 2-chloro-4-ethoxy-6-methylpyrimidine. Background technique [0002] The synthesis method of 2-chloro-4-ethoxy-6-methylpyrimidine is the starting material for the synthesis of many drugs, especially the important intermediates of many methylpyrimidine compounds. There is no report on the synthesis method of this compound in China at present. 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 synthetic method for medical raw material 2-chloro-4-ethoxy-6-methylpyrimidine. [0004] The purpose of the present invention is achieved like this: [0005] A kind of synthetic method of medical raw material 2-chloro-4-ethoxyl-6-methylpyrimidine, using methylpyrimidine as raw material, under the action of solvent n-butanol and 1.5 atmospheric pressure, under the catalysis of vanadium pen...

AI Technical Summary

Problems solved by technology

[0002] The synthesis method of 2-chloro-4-ethoxy-6-methylpyrimidine is the starting material for the synthesis of many drugs, especially the important intermediates of many methylpyrimidine compounds. There is no report on the synthesis method of this compound in China at present.