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
    • 109. 发明授权
    • Method for preparing cyclic compounds
    • 环状化合物的制备方法
    • US07459551B2
    • 2008-12-02
    • US10508659
    • 2003-03-26
    • Akira Kaneko
    • Akira Kaneko
    • C07D499/00C07D487/00C07D487/08C07D501/00C07D221/00C07D237/00C07D239/00C07D241/00C07D251/00C07D253/00C07D255/00C07D257/00C07D259/00C07D205/00
    • C07D403/12C07D499/00C07D501/00
    • The present invention provides a method for preparing a β-lactam compound of the following Formula (3), which comprises the step of reacting a compound of the following Formula (1) with a trialkyl phosphite represented by the formula (R5O)3P (wherein R5 represents an ethyl group, etc.) in an amount of 2 to 5 moles per mole of the compound and the step of heating the resulting reaction mixture in a diluent, wherein said method is characterized by having the step of completely removing unreacted trialkyl phosphite from the reaction mixture prior to the step of heating. (wherein X represents S, etc., Y represents N, etc., n represents 0 or 1, R1 represents an optionally substituted alkyl group containing 1 to 10 carbon atoms, etc., R2 and R3 each represent an optionally substituted alkyl or heterocyclic group, etc., and R4 represents an alkenyloxy group containing 1 to 6 carbon atoms, etc., provided that R1 and R2 may together form a β-lactam ring, etc.)
    • 本发明提供了制备下式(3)的β-内酰胺化合物的方法,该方法包括使下式(1)的化合物与式(R5O)3P表示的亚磷酸三烷基酯反应的步骤(其中 R5代表乙基等),每摩尔化合物的量为2至5摩尔,和将所得反应混合物加热到稀释剂中的步骤,其特征在于具有完全除去未反应的亚磷酸三烷基酯的步骤 在加热步骤之前的反应混合物中。 (其中X表示S等,Y表示N等,n表示0或1,R1表示可以具有取代基的碳原子数为1〜10的烷基等,R2和R3各自表示任意取代的烷基或杂环 基团等,R 4表示含有1至6个碳原子的烯氧基等,条件是R 1和R 2可以一起形成β-内酰胺环等)