Pyrimidin-4-one derivatives, their intermediates for their production and processes for producing these compounds

摘要

PCT No. PCT/JP96/02169 Sec. 371 Date Feb. 10, 1998 Sec. 102(e) Date Feb. 10, 1998 PCT Filed Aug. 1, 1996 PCT Pub. No. WO97/06150 PCT Pub. Date Feb. 20, 1997Novel pyrimidin-4-one derivatives of formula [1] are provided, which are useful as active ingredients of herbicides, wherein R1 is hydrogen or alkyl; R2 is alkyl optionally substituted with halogen; R3 is alkyl optionally substituted with halogen, alkenyl, or alkynyl; and Q is substituted phenyl. Also provided are intermediates for their production and processes for producing these intermediates.