4-NITROBENZOYL DERIVATIVE HAVING SULFOXYIMINO GROUP AND HERBICIDE FOR RICE PLANT

摘要

Disclosed is a 4-nitrobenzoyl derivative represented by the formula [I] or a salt thereof. Also disclosed is a herbicide for a rice plant, which comprises the derivative or the salt as an active ingredient. (I) wherein R1 represents a halogen atom, an organic group or the like; p represents a number of 1 or the like; R2 and R3 independently represent an alkyl group or the like, or R2 and R3 may together form a 3- to 8-membered hetero ring which may contain 1 to 4 oxygen atoms or the like; and Q represents a group represented by any one of the formulae Q1 to Q8: Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 wherein * represents a binding site; G represents an oxygen atom or the like; R4 represents a hydrogen atom or the like; R5 represents a hydrogen atom, an unsubstituted alkyl group, an alkyl group having a substituent or the like; R6 represents a cyano group or the like; R7 represents an alkyl group or the like; R8 to R11 independently represent a hydrogen atom, an alkyl group or the like; X represents a group represented by CH<SUB>2</SUB> or the like; Y represents an oxo group, an alkyl group or the like; and m represents an integer of 0 to 4. It becomes possible to provide a 4-nitrobenzoyl derivative or a salt thereof which can be synthesized in an industrially advantageous manner, can surely exert its efficacy at a lower dose, is highly safe and is useful as an active ingredient for a herbicide for a rice plant, and also provide a herbicide for a rice plant which comprises the compound as an active ingredient.