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
    • 62. 发明授权
    • Process for preparing 1-aryl-4-carbamoyl-tetrazolinones
    • 1-芳基-4-氨基甲酰基 - 四唑啉酮的制备方法
    • US5874586A
    • 1999-02-23
    • US18484
    • 1998-02-04
    • Reinhard LantzschUwe StelzerCarl Casser
    • Reinhard LantzschUwe StelzerCarl Casser
    • C07D257/04C07D401/06C07D403/06
    • C07D257/04
    • Herbicidally active 1-aryl-4-carbamoyl-tetrazolinones of the formula (I) ##STR1## in which Ar represents optionally substituted aryl,R.sup.1 represents in each case optionally substituted alkyl, alkenyl, alkinyl or alkoxy, andR.sup.2 represents in each case optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkylalkyl, aryl or arylalkyl, or, together with R.sup.1, represents alkanediyl,are obtained in good yields and at high purity by reacting 1-aryl-tetrazolinones of the formula (II) with phosgene in the presence of a diluent at temperatures of between 0.degree. C. and 150.degree. C. ("first process step"), and reacting the resulting (novel) 1-aryl-4-chlorocarbonyl-tetrazolinones of the formula (III) with amines of the formula (IV) in the presence of a diluent, and, where appropriate, in the presence of a further basic compound, at temperatures of between -20.degree. C. and +100.degree. C. ("second process step"): ##STR2##
    • 式(I)的除草活性1-芳基-4-氨基甲酰基 - 四唑啉酮其中Ar表示任选取代的芳基,R 1表示在任何情况下为任选取代的烷基,烯基,炔基或烷氧基,并且R 2表示 通过使式(II)的1-芳基 - 四唑啉酮与式(II)的1-芳基 - 四唑啉酮反应,可以以良好的收率和高纯度获得任意取代的烷基,烯基,炔基,环烷基,环烷基烷基,芳基或芳基烷基,或者与R1一起代表烷二基, 在0℃至150℃的温度下,在稀释剂存在下进行光气(“第一工艺步骤”),并使所得式(III)的(新)1-芳基-4-氯羰基 - 四唑啉酮与式 (Ⅳ)的胺在稀释剂存在下,在适当的情况下,在另外的碱性化合物的存在下,在-20℃至+ 100℃的温度下进行。(“第二工艺步骤” ): + TR