会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Certain 1-hydroxy-2-pyridones
    • 某些1-羟基-2-吡啶酮
    • US3883545A
    • 1975-05-13
    • US31738772
    • 1972-12-22
    • HOECHST AG
    • LOHAUS GERHARDDITTMAR WALTER
    • C07D213/89C07D31/30
    • C07D213/89
    • New 1-hydroxy-2-pyridones of the general formula
      IN WHICH R1 is alkyl of 1 to 17 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, cyclohexylalkyl or phenalkyl both having 1 to 3 carbon atoms in the alkylene chain or Alpha -furyl, all of which may be substituted by halogen and R2 to R4 are hydrogen or lower alkyl or 2 adjacent substituents together form a trimethylene or tetramethylene chain, and in which R1 to R4 together contain at least 2 carbon atoms, are prepared by contacting unsaturated delta -keto esters or mixtures thereof with hydroxylamine and subjecting the products to cyclization. The compounds exhibit antimycotic properties.
    • 新的具有1至17个碳原子的烷基,5至8个碳原子的环烷基,环烷基或苯烷基,其中亚烷基链中具有1至3个碳原子的α-羟基-2-吡啶酮或α-呋喃基 所有这些可以被卤素取代,并且R 2至R 4是氢或低级烷基或2个相邻的取代基一起形成三亚甲基或四亚甲基链,并且其中R 1至R 4一起含有至少2个碳原子,通过使不饱和三 - 酯或其与羟胺的混合物,并使产物环化。