The invention relates to 4-benzoylisoxazole derivatives of formula (I):
    wherein R represents hydrogen or -CO₂R⁴;
   R¹ represents alkyl, haloalkyl or optionally substituted cycloalkyl;
   R² represents halogen, alkyl, haloalkyl, alkyl substituted by one or more groups -OR⁵; or
   a group selected from nitro, cyano, -CO₂R⁵, -S(O)pR⁶, -O(CH₂)mOR⁵, -COR⁵, -OR⁵ and -N(R⁸)SO₂R⁷;
   R³ represents -SO₂R⁷;
   X represents the oxygen atom;
   n represents zero or an integer from one to four;
   R⁴ represents alkyl or haloalkyl;
   R⁵ and R⁶, independently represent alkyl, haloalkyl or optionally substituted phenyl;
   R⁷ represents alkyl, haloalkyl, optionally substituted phenyl or -NR⁵R⁶;
   R⁸ represents hydrogen, optionally halogenated alkyl, alkenyl or alkynyl; cycloalkyl, optionally substituted phenyl, -SO₂R⁶ or -OR⁵;
   p represents zero, one or two; and
   m represents an integer from one to three;
   and their use as herbicides is described.
                            本发明涉及式(I)的 4-苯甲酰
异噁唑衍
生物:
 其中 R 代表氢或-CO₂R⁴;
R¹ 代表烷基、卤代烷基或任选取代的环烷基;
R² 代表卤素、烷基、卤代烷基、被一个或多个基团 -OR⁵ 取代的烷基;或
选自硝基、
氰基、-CO₂R⁵、-S(O)pR⁶、-O(CH₂)mOR⁵、-COR⁵、-OR⁵和-N(R⁸)SO₂R⁷的基团;
R³ 代表-SO₂R⁷;
X 代表氧原子
n 代表零或 1 到 4 的整数;
R⁴ 代表烷基或卤代烷基;
R⁵ 和 R⁶ 独立地代表烷基、卤代烷基或任选取代的苯基;
R⁷ 代表烷基、卤代烷基、任选取代的苯基或 -NR⁵R⁶;
R⁸ 代表氢、任选卤代烷基、烯基或炔基、环烷基、任选取代的苯基、-SO₂R⁶ 或 -OR⁵;
p 代表 0、1 或 2;以及
m 代表一至三的整数;
描述了它们作为
除草剂的用途。