| abstract |
(57) [Summary] [Structure] General formula, [Chemical formula 1] (In the formula, Y 1 , Y 2 , Y 3 , Y 4 and Y 5 are the same or different and represent a hydrogen atom, a chlorine atom, a methyl group, a methoxy group, a thiol group, a hydrogen atom, a sodium salt thereof, X 1 and X 2 are the same or different and are oxygen or sulfur atoms, B 1 , B 2 and B 3 are the same or different and represent a hydrogen atom, a methyl group or the like, A 1 is a hydrogen atom, a methyl group, Phenyl group, cyano group, propenyl group, A cyanoketone derivative represented by a propynyl group, a methoxycarbonyl group, a furyl group, a pyridyl group, a benzoyl group, etc.). [Effect] Unlike conventional cyanoketone derivatives, it has selective herbicidal activity against broadleaf weeds. The activity itself is also extremely high. It is also useful as an intermediate raw material for other novel compounds having a specific herbicidal effect. |