Method for preparing 2,5-dialkoxy terephthalic acid

Method for preparing 2,5-dialkoxy terephthalic acid

The invention belongs to the technical field of organic synthesis and relates to ortho-position and para-position substitutions of an aromatic ring, in particular to a synthetic technique of alkoxy ortho-position and para-position substituted dicarboxylic acid. According to the preparation method of...

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Hauptverfasser: LU YI, YOU YUSHENG, GUO GUOJIAN, LIU HONGCHAO, WU LIJUN, MAO RUZENG, HUANG HUI, JI KEJIAN
Format: Patent
Sprache:chi ; eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator LU YI
YOU YUSHENG
GUO GUOJIAN
LIU HONGCHAO
WU LIJUN
MAO RUZENG
HUANG HUI
JI KEJIAN
description The invention belongs to the technical field of organic synthesis and relates to ortho-position and para-position substitutions of an aromatic ring, in particular to a synthetic technique of alkoxy ortho-position and para-position substituted dicarboxylic acid. According to the preparation method of 2,5-dialkoxy terephthalic acid, provided by the invention, the 2,5-dialkoxy terephthalic acid is prepared from 1,4-dihalogenated-2,5-dialkoxy benzene by adopting a Grignard reaction mechanism through the following processes: preparation of a Grignard reagent, carbon chain propagation, hydrolysis, separation and purification, and the like; the preparation method provided by the invention can be proceeded at normal pressure and has the advantages of stable reaction, short period, convenience for operating and easiness of being controlled; and the product has high yield and high purity.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Method for preparing 2,5-dialkoxy terephthalic acid
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