| abstract |
NEW MATERIAL:The compound of formula I [A is alkyl, alkenyl or alkynyl; B is H, alkyl, halogen, alkoxy, etc.; X is alkyl, alkoxy, halogen, NO 2 , CN, etc.; Y is COOR 1 (R 1 is H, alkyl, phenyl, etc.), COO-L-OR 1 (L is alkylene), etc.; Z is halogen, NO 2 , alkoxy, etc.; V is H, halogen, alkyl, etc.; W is V, NO 2 , CN, etc.; Q is H, alkyl, alkenyl, cyanomethyl, phenyl, etc.]. n EXAMPLE: 1-Ethyl-5-hydroxy-4- (4-methanesulfonyl-3-methoxymethyl-2-methyl- benzoyl)pyrazole. n USE: A selective herbicide. n PREPARATION: For example, a compound of formula I wherein Q is H can be produced by reacting a benzoic acid derivative of formula II with a 5- hydroxypyrazole derivative of formula III. n COPYRIGHT: (C)1990,JPO&Japio |