发明授权
US4503234A Production of 2-(2-aminothiazole-4-yl)-2-(syn)-methoxyimino acetic esters
失效
2-(2-氨基噻唑-4-基)-2-(顺式) - 甲氧基亚氨基乙酸酯的制备
- 专利标题: Production of 2-(2-aminothiazole-4-yl)-2-(syn)-methoxyimino acetic esters
- 专利标题(中): 2-(2-氨基噻唑-4-基)-2-(顺式) - 甲氧基亚氨基乙酸酯的制备
-
申请号: US286636申请日: 1981-07-24
-
公开(公告)号: US4503234A公开(公告)日: 1985-03-05
- 发明人: Alfred Huwiler , Leander Tenud
- 申请人: Alfred Huwiler , Leander Tenud
- 申请人地址: CHX Gampel
- 专利权人: Lonza Ltd.
- 当前专利权人: Lonza Ltd.
- 当前专利权人地址: CHX Gampel
- 优先权: CHX5658/80 19800724
- 主分类号: B01J31/02
- IPC分类号: B01J31/02 ; C07B61/00 ; C07D277/20 ; C07D277/40
摘要:
Process for the production of 2-(2-aminothiazole-4-yl)-2-(syn)-methoxyimino acetic ester. First 4-chloroacetoacetic ester is oximized and then the resultant chlorohydroxyimino ester, in solution form, reacted with thiourea to produce 2-(2-aminothiazole-4-yl)-2-(syn)-hydroxyimino acetic ester. The latter is methylated with dimethyl sulfate using phase transfer catalysis.
公开/授权文献
- US6032635A Overhead cam engine with integral head 公开/授权日:2000-03-07
信息查询