发明名称 |
PURIFICATION PROCESS OF 3,3'-DINITRODIPHENYL COMPOUNDS |
摘要 |
<p>A crude 3,3'-dinitrodiphenyl compound selected from 3,3'-dinitrodiphenylsulfone or 3,3'-dinitrobenzophenone is purified by reacting the crude 3,3'-dinitrodiphenyl compound with a lower alcohol in the presence of a base so as to convert practically the isomer or isomers, which contain one or more nitro groups at the ortho- or/and para-positions, only into the corresponding alkoxy compound or compounds thereof and then separating the alkoxy compound or compounds.</p> |
申请公布号 |
EP0212823(B1) |
申请公布日期 |
1990.02.07 |
申请号 |
EP19860305281 |
申请日期 |
1986.07.09 |
申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
YAMAGUCHI, KEIZABURO;SUGIMOTO, KENICHI;TANABE, YOSHIMITSU;NAGATA, TERUYUKI;YAMAGUCHI, AKIHIRO |
分类号 |
C07C201/16;C07C317/14 |
主分类号 |
C07C201/16 |
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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