PYRIDONE DERIVATIVES AND HERBICIDES

摘要

Pyridone derivatives represented by general formulae (I-1) or (I-2), herbicides containing the same, and intermediates for the production of the same, wherein R represents alkyl or haloalkyl; R<1> represents hydrogen, alkyl, haloalkyl, acetyl, amino, alkoxycarbonyl-amino, alkylcarbonylamino, etc.; R<2> represents hydrogen, alkyl, carboxy or alkoxycarbonyl; R<19> represents hydrogen, halogeno, cyano, etc.; and Q represents optionally substituted phenyl or an optionally substituted fused heterocycle. The herbicides exert excellent herbicidal effects on various upland weeds such as broadleaf weeds, perennial and annual cyperaceous weeds and grass weeds over a wide range of from the pre-sprouting stage to the development stage. Also, annual and perennial lowland weeds can be controlled thereby. On the other hand, these herbicides are highly safe for crops.