发明名称 |
PREPARATION METHOD OF 4-AMINOMETHYLBENZOIC ACID |
摘要 |
The present invention relates to a preparation method of 4-aminomethylbenzoic acid comprising the following steps: preparing 4-carboxylbenzaldehyde or an alkyl ester thereof (methyl 4-formyl benzoate); reacting the 4-carboxylbenzaldehyde or an alkyl ester thereof (methyl 4-formyl benzoate) with hydroxyamine to oximate the same; and contact reducing 4-carboxylbenzaldehyde oxime or an alkyl ester oxime thereof obtained by the oximation, through hydrogen in a sodium hydroxide aqueous solution. Since methyl 4-hydroxyiminomethylbenzoate is reacted as a raw material in the presence of an alkali, hydrogen of a relatively low pressure can be used and a purification process is also simple, thereby enabling preparation of 4-aminomethylbenzoic acid with a low cost and high yield. |
申请公布号 |
EP2524909(A4) |
申请公布日期 |
2013.12.25 |
申请号 |
EP20100843276 |
申请日期 |
2010.12.09 |
申请人 |
NAF CO., LTD.;SK PETROCHEMICAL CO., LTD. |
发明人 |
KIM, WOO SUN |
分类号 |
C07C227/12;B01J23/40;B01J23/755;C07C229/38 |
主分类号 |
C07C227/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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