发明申请
- 专利标题: Process for the preparation of 3-aryl-benzofuran-2-ones
- 专利标题(中): 3-芳基 - 苯并呋喃-2-酮的制备方法
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申请号: US09899450申请日: 2001-07-05
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公开(公告)号: US20020115855A1公开(公告)日: 2002-08-22
- 发明人: Michele Gerster , Paul Dubs
- 优先权: DE00810595.9 20000707
- 主分类号: C07D475/00
- IPC分类号: C07D475/00 ; C07D473/00 ; C07D47/02
摘要:
The instant invention discloses a process for the preparation of compounds of formula I 1 wherein the general symbols are as defined in claim 1, which process comprises hydrolyzing a compound of formula V 2 wherein the general symbols are as defined in claim 1, in an aqueous solvent in the presence of an acid. The compounds of the formula V are new and useful as stabilizers for protecting organic materials, in particular polymers and lubricants, against oxidative, thermal or light-induced degradation.
公开/授权文献
- US06586606B2 Process for the preparation of 3-aryl-benzofuran-2-ones 公开/授权日:2003-07-01
信息查询
IPC分类:
C | 化学;冶金 |
C07 | 有机化学 |
C07D | 杂环化合物(高分子化合物入C08) |
C07D475/00 | 含蝶啶环系的杂环化合物 |