Synthetic method for m-dialkylaminophenol

The invention provides a synthetic method for m-dialkylaminophenol. The synthetic method is characterized by comprising the following steps: step 1, adding an aqueous solution of sodium nitrite into an aqueous solution of sulfuric acid containing m-dialkylaminoaniline drop by drop at a temperature o...

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Bibliographic Details
Main Authors ZHENG TUCAI, WEI BIN, MOU ZHONGYUE, LI JIAN, JING DELIN, XU XUMING, HU XIAOKUI, GUO HAIBIN
Format Patent
LanguageChinese
English
Published 18.12.2018
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention provides a synthetic method for m-dialkylaminophenol. The synthetic method is characterized by comprising the following steps: step 1, adding an aqueous solution of sodium nitrite into an aqueous solution of sulfuric acid containing m-dialkylaminoaniline drop by drop at a temperature of -10 to 20 DEG C, and maintaining the obtained solution at a temperature of 5 to 30 DEG C for 1 to10 h after completion of the addition so as to obtain an aqueous solution of sulfuric acid containing m-dialkylaminoaniline diazohydrosulfate; and step 2, directly heating aqueous solution of sulfuricacid containing m-dialkylaminoaniline diazohydrosulfate to 45-110 DEG C, maintaining the solution at the temperature for 1-18 h, allowing m-dialkylaminoaniline diazohydrosulfate to undergo the hydrolysis reaction of a diazonium salt, and successively carrying out cooling and post-treatment so as to obtain the product dialkylaminophenol, wherein sulfuric acid needed in the first step and the second step is totally added in
Bibliography:Application Number: CN201810979564