申请人:NIHON BAYER AGROCHEM K.K.
公开号:EP0571856A1
公开(公告)日:1993-12-01
The present invention relates to novel pyrimidinylthioacrylic acid derivatives of the formula (I)
wherein
R¹represents hydrogen or in each case optionally substituted C₁₋₆ alkyl, C₂₋₄ alkenyl or C₂₋₄ alkynyl,
R²represents hydrogen or optionally substituted C₁₋₆ alkyl, or alkali salts,
R³ and R⁴each independently represent C₁₋₄ alkyl, C₁₋₄ alkoxy, halogeno-C₁₋₄ alkyl, halogeno-C₁₋₄ alkoxy or halogen, and
R⁵represents hydrogen, or in each case optionally substituted C₁₋₆ alkyl, phenyl, C₂₋₄ alkenyl, C₂₋₄ alkynyl, or a heterocyclic ring, or an alkali metal salt, alkali earth metal or organic ammonium salt of pyrimidinylthioacrylic acid derivatives of the formula (I),
to processes for their preparation and their use as herbicides, as well as to novel intermediates and to a process for their preparation.
本发明涉及公式(I)的新型嘧啶基硫丙酸衍生物,其中R¹代表氢或每种情况下可选择取代的C₁₋₆烷基、C₂₋₄烯基或C₂₋₄炔基,R²代表氢或可选择取代的C₁₋₆烷基,或者碱盐,R³和R⁴各自独立地代表C₁₋₄烷基、C₁₋₄烷氧基、卤代C₁₋₄烷基、卤代C₁₋₄烷氧基或卤素,R⁵代表氢,或每种情况下可选择取代的C₁₋₆烷基、苯基、C₂₋₄烯基、C₂₋₄炔基或杂环,或者公式(I)的嘧啶基硫丙酸衍生物的碱金属盐、碱土金属或有机铵盐,以及它们的制备方法和作为除草剂的用途,以及新型中间体和其制备方法。