PURPOSE: To provide the subject new compound giving broad herbicidal activities, and useful as an active ingredient for the selective herbicides for paddy fields with safety and/or environmental tolerance for crop.
CONSTITUTION: A compound of formula I {Ar is of formula VII or formula VIII [R5 is alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, NR12R13, OnS (O)n, R11, halogen, NR14SO2R11, CN or NO2 (R12-R14 are each H or alkyl; R11 is alkyl; (n) is 0 or 1; (n)' is 0-2); R6 and R7 are each H or R5]; R16-R19 are each O, S or 1-4C alkylene; Q is O or S; R1-R4, R9 and R10 are each H, alkyl or COOR15 (R15 is H or alkyl); R8 is alkyl, cycloalkyl, phenyl, benzyl CN or of formula IX ((m) is 1-3; R20 and R21 are each H or alkyl); (l) is 0-2}. This compound can be obtained through the synthesis route given by the reaction formulas, having remarkable herbicidal activity against the annual and perennial paddy weeds, while being low in chemical injury in paddy rice.
SATO TADASHI
MIKAMI KENJI
YAMADA YUJI
SATOU MAKIKO
