Abstract: The present invention provides a novel compound which is effective for the removal of a wide variety of weeds including difficult-to-control weeds emerging in paddy field and which is safe to mammals; a process for production thereof; a herbicide containing the compound as an active ingredient; and novel raw material compounds used in said process. The present invention relates to a di- or trifluoromethanesulfonyl anilide derivative represented by the following general formula: (wherein R1 is a hydrogen atom, an alkyl group or an alkoxyalkyl group; and R2 is a hydrogen atom when R1 is a hydrogen atom or an alkyl group, and is a hydrogen atom or a fluorine atom when R1 is an alkoxyalkyl group), or a salt thereof, both of said derivative and said salt having a herbicidal activity.

Abstract: A condensed heterocyclic derivative of the formula ##STR1## (wherein R is a hydroxyl group, R.sup.3 or R.sup.4 is an alkoxy group, W is an oxygen atom, Yn is a hydrogen atom, Z is a methine group, and A is a 5- or 6-membered heterocyclic ring which may be substituted, and a herbicide, are presented. When used for paddy field treatment, upland soil treatment and foliage treatment, the condensed heterocyclic derivative of the present invention exhibits excellent herbicidal activities against gramineous and non-gramineous weeds without adversely affecting crop plants.

Abstract: The present invention provides an indazolesulfonylurea derivative represented by the general formula: ##STR1## ?wherein R.sup.1 is a hydrogen atom or an alkyl group, etc., R.sup.2 and R.sup.3 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group, the formula --COR.sup.4 (wherein R.sup.4 represents an alkoxy group, etc.), an alkoxy group, a haloalkoxy group or a cyano group, etc., X is an oxygen atom or a sulfur atom, Y is a hydrogen atom or an alkyl group, etc., A and B are the same or different and represent a halogen atom, an alkoxy group or an alkyl group, etc., and Z represents a nitrogen atom or a methine group!, as well as a herbicide containing it as an active ingredient and an intermediate for its production.The compound of the present invention exhibits excellent herbicidal effects over a wide range from the preemergence stage to the growing stage of various weeds which are problematic in agricultural fields.

Abstract: The present invention provides an indazolesulfonylurea derivative represented by the general formula: ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group, etc., R.sup.2 and R.sup.3 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group, the formula --COR.sup.4 (wherein R.sup.4 represents an alkoxy group, etc.), an alkoxy group, a haloalkoxy group or a cyano group, etc., X is an oxygen atom or a sulfur atom, Y is a hydrogen atom or an alkyl group, etc., A and B are the same or different and represent a halogen atom, an alkoxy group or an alkyl group, etc., and Z represents a nitrogen atom or a methine group, as well as a herbicide containing it as an active ingredient and an intermediate for its production.The compound of the present invention exhibits excellent herbicidal effects over a wide range from the preemergence stage to the growing stage of various weeds which are problematic in agricultural fields.

Abstract: A condensed heterocyclic derivative of the formula (I): ##STR1## (wherein R is a hydroxyl group, R.sup.3 or R.sup.4 is an alkoxy group, W is an oxygen atom, Yn is a hydrogen atom, Z is a methine group, and A is a 5- or 6-membered heterocyclic ring which may be substituted, and a herbicide, are presented. When used for paddy field treatment, upland soil treatment and foliage treatment, the condensed heterocyclic derivative of the present invention exhibits excellent herbicidal activities against gramineous and non-gramineous weeds without adversely affecting crop plants.

Abstract: The present invention provides an indazolesulfonylurea derivative represented by the general formula: ##STR1## [wherein R.sup.1 is a hydrogen atom or an alkyl group, etc., R.sup.2 and R.sup.3 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group, the formula --COR.sup.4 (wherein R.sup.4 represents an alkoxy group, etc.), an alkoxy group, a haloalkoxy group or a cyano group, etc., X is an oxygen atom or a sulfur atom, Y is a hydrogen atom or an alkyl group, etc., A and B are the same or different and represent a halogen atom, an alkoxy group or an alkyl group, etc., and Z represents a nitrogen atom or a methine group], as well as a herbicide containing it as an active ingredient and an intermediate for its production.The compound of the present invention exhibits excellent herbicidal effects over a wide range from the preemergence stage to the growing stage of various weeds which are problematic in agricultural fields.