Abstract: A pyrazolyl acrylic acid derivative of formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen or C.sub.1 -C.sub.5 alkyl; W is C.sub.1 -C.sub.4 alkylene optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenylene optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkynylene, --O--, --S--, or --NH--; q is 0 or 1; A is optionally substituted C.sub.3 -C.sub.7 cycloalkyl, optionally substituted C.sub.6 -C.sub.12 aryl, or optionally substituted heteroaryl having one to three heteroatoms selected from oxygen, sulfur, and nitrogen, and having two to thirteen carbon atoms in total.Process for preparing the derivative of formula (I) and agricultural/horticultural fungicide formulation containing the derivative are also provided.

Abstract: The present invention provides an indan-1,3-dione derivative represented by the following formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; R.sup.2 represents a group represented by ##STR2## wherein E represents a (substituted) phenyl group or a (substituted) pyridyl group; Y represents a hydroxyl group; and Z represents a halogen atom, a (substituted) alkylsulfonyloxy group or a (substituted) phenylsulfonyloxy group, or Y and Z are bonded to represent --O--; and A represents a (substituted) 1,3-butadienylene group or a (substituted) 1,3-azabutadienylene group, and a herbicidal composition containing the same as an active ingredient.

Abstract: The present invention provides indan-1,3-dione derivatives, including derivatives represented by the following formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; R.sup.2 represents a group represented by ##STR2## wherein E represents a (substituted) phenyl group or a (substituted) pyridyl group; Y represents a hydroxyl group; and Z represents a halogen atom, a (substituted) alkylsulfonyloxy group or a (substituted) phenylsulfonyloxy group, or Y and Z are bonded to represent --O--; and A represents a (substituted) 1,3-butadienylene group or a (substituted) 1,3-azabutadienylene group, and a herbicidal composition containing the same as an active ingredient.The compound of the formula (I) shows high herbicidal activity against gramineous weeds, cyperaceous weeds, etc. but shows markedly low phytotoxicity against crops.

Abstract: Disclosed herein is a sulfonamide compound represented by the formula (I): ##STR1## wherein A represents a phenyl group which may be substituted, B represents a phenyl group which may be substituted, R represents a lower alkyl group, a lower alkoxy group or a lower haloalkyl group, W represents a hydroxyl group or a halogen atom, and z represents a halogen atom, a lower alkysulfonyloxy group which may be substituted, or a phenylsulfonyloxy group which may be substituted, and a herbicidal composition containing the sulfonamide compound as an effective ingredient.

Abstract: Disclosed herein is an N-[2-(pyridyl)propyl]-N-substituted sulfonamide represented by the following general formula (I): ##STR1## wherein J represents a phenyl group which may be substituted or benzo-condensed, A represents --CH.sub.2 --, --CH.dbd.CH--, --O-- or --N(r)-- (wherein r represents an alkyl group having 1 to 4 carbon atoms), b represents 0 or 1, R represents an alkyl group, alkenyl group, alkynyl group, alkoxy group, fluoroalkyl group or formyl group, D represents a hydroxyl group, E represents a halogen atom, an alkylsulfonyloxy group or a benzenesulfonyloxy group which may be substituted, or D and E represent --O-- in combination, and V represents a pyridyl group which may be substituted, a herbicide containing said N-[2-(pyridyl)propyl]-N-substituted sulfonamide as an active ingredient and a 1-(halogenomethyl)vinylpyridine as an intermediate thereof.

Abstract: A thiazolidine compound represented by the following general formula I or its acid addition salt ##STR1## where X is --CH.dbd. or --N.dbd., Y is ##STR2## (where R is a hydrogen atom, a methyl group or an ethyl group) or --CH.sub.2 CH.sub.2 --, Ar is a phenyl group which may be substituted by halogen, lower alkyl, lower alkoxy, phenyl or trifluoromethyl, a thienyl group or a naphthyl group, R.sup.1 is a hydrogen atom, a straight chain or branched chain alkyl group having from 1 to 10 carbon atoms or a phenyl group which may be substituted, R.sup.2 is a hydrogen atom, a straight chain or branched chain alkyl group having from 1 to 10 carbon atoms, a phenyl group which may be substituted, a lower alkoxycarbonyl group, a lower alkylcarbamoyl group or a lower alkenylcarbamoyl group, and R.sup.3 is a hydrogen atom, a lower alkyl group, a lower acyl group, a lower alkylcarbamoyl group, a lower alkylthiocarbamoyl group or a phenylcarbamoyl group. The compound is useful as fungicide.