发明名称 |
Manufacturing method for 4-nitrosoaniline from urea and nitrobenzene |
摘要 |
A method for preparing 4-nitrosoaniline, including reacting urea and nitrobenzene in a polar organic solvent in the presence of a base at a temperature of room temperature to 150° C. The method uses a relatively cheap urea and nitrobenzene as the raw materials, and also a relatively cheap base, thereby decreasing the manufacturing cost. Urea used as an amine donor is excellent in a reactivity to nitrobenzene, and a reaction intermediate is unstable as compared with 4-(4-nitrophenyl)benzamide to easily decompose into 4-nitroaniline and 4-nitrosoaniline. This allows a reaction time and a process time to be shortened. Moreover, the method is advantageous in that waste hazardous to the environment is not produced as a byproduct. |
申请公布号 |
AU3332300(A) |
申请公布日期 |
2001.05.30 |
申请号 |
AU20000033323 |
申请日期 |
2000.03.15 |
申请人 |
KOREA KUMHO PETROCHEMICAL CO., LTD. |
发明人 |
YOUNG J. JOO;JIN-EOK KIM;JEONG-IM WON;KUM-UI HWANG |
分类号 |
C07C209/02;C07B61/00;C07C209/00;C07C211/52 |
主分类号 |
C07C209/02 |
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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