发明名称 |
High-selective production method of di(aminomethyl)-substituted aromatic compound |
摘要 |
A di(aminomethyl)-substituted aromatic compound is produced by a two-stage hydrogenation. In the first stage, an aromatic dinitrile is hydrogenated into a cyano(aminomethyl)-substituted aromatic compound in the presence of a Pd-containing catalyst. The resultant cyano(aminomethyl)-substituted aromatic compound is then hydrogenated in the second stage into the target di(aminomethyl)-substituted aromatic compound in the presence of a Ni- and/or Co-containing catalyst. By the above method, the di(aminomethyl)-substituted aromatic compound is produced in a high selectivity and a sufficiently high yield without reducing the catalyst life.
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申请公布号 |
US7179945(B2) |
申请公布日期 |
2007.02.20 |
申请号 |
US20040781884 |
申请日期 |
2004.02.20 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
KANAMORI YOSHINORI;EBATA SHUJI;TSUKAHARA KENGO;YAMAMOTO YOSHIAKI |
分类号 |
C07C211/00;C07C209/48;C07C211/27;C07C211/30;C07C253/30;C07C255/58 |
主分类号 |
C07C211/00 |
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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