基本信息:
- 专利标题： PRODUCTION OF CAPROLACTAM AND LAUROLACTAM
- 申请号：JP29662091 申请日：1991-10-17
- 公开(公告)号：JPH054964A 公开(公告)日：1993-01-14
- 发明人： INABA YUKIO , KUROKAWA YASUHIRO , NAWATA YOSHIHIRO , KAWAI JOJI
- 申请人： UBE INDUSTRIES
- 专利权人： UBE INDUSTRIES
- 当前专利权人： UBE INDUSTRIES
- 优先权： JP29662091 1991-10-17; JP31420390 1990-11-21
- 主分类号： C07D201/04
- IPC分类号： C07D201/04 ; C07D225/02 ; C07D233/10
摘要：
PURPOSE:To obtain the subject compounds of high quality in a high yield by Beckmann's rearrangement reaction of cyclohexanone oxime and cyclododecanone oxime in a specified condition. CONSTITUTION:Cyclohexanone oxime is blended with cyclododecanone oxime in a weight ratio of (40/60)-(70/30) and then subjected to continuous Beckmann's rearrangement reaction in the presence of sulfuric acid and fuming sulfuric acid. In this reaction, the quantity of fuming sulfuric acid used is controlled so that the concentration of free SO3 in the rearrangement reaction solution and the molar ratio (m) of sulfuric acid to oximes may satisfy 0.5wt.%
信息查询:
EspacenetIPC结构图谱:
| C | 化学；冶金 |
| --C07 | 有机化学 |
| ----C07D | 杂环化合物 |
| ------C07D201/00 | 未取代的内酰胺的制备、分离、纯化或稳定化 |
| --------C07D201/02 | .内酰胺的制备 |
| ----------C07D201/04 | ..由肟或经肟，通过贝克曼重排 |