Abstract:
PURPOSE: Provided are 5-benzyloxymethyl-1,2-isoxazoline derivatives having an excellent herbicidal activity, its manufacturing method and herbicides containing the derivative as an active ingredient. CONSTITUTION: 5-benzyloxymethyl-1,2-isoxazoline derivative is represented by the formula(I), in which each X1, X2 and X3 represents hydrogen, methyl group, ethyl group, halogen group, methoxy group or nitro group (provided that it is an exception that X1, X2 and X3 are decimals all together); and Y1, Y2 and Y3 are respectively hydrogen or fluorine.
Abstract:
PURPOSE: Provided is N-(5-isoxazoline methyloxyphenyl)-3,4,5,6-tetrahydrophthalimide derivative which shows a great herbicidal effect only on weed without damaging crops like rice and is useful as a plant growth control agent. CONSTITUTION: A method for manufacturing N-(5-isoxazolinemethyloxyphenyl)-3,4,5,6-tetrahydrophthalimide derivative is characterized by the step of reacting a compound of the formula (2) with nitrileoxide or precursor in the presence of solvents like dichloromethane, tetrahydrofuran, benzene, ethyl ether, and C1-C4 alcohol. In the formula (1), R is an alkyl group of C1-C3, phenyl group, substituted phenyl group, cyano group, carboxylic acid group, or carboxylic acid ester group. The substituted phenyl group is a phenyl group having the same or different 1-3 substituents among an alkyl group of C1-C3, haloalkyl group of C1-C3, methylsulfonyl group, alkoxy group of C1-C3, halogen atom, cyano group, nitro group, carboxylic acid group, and carboxylic acid ester group.
Abstract:
PURPOSE: A hexahydro-1,2-benzisoxazol derivative is excellent in weeding activity and innoxious to paddy rice. CONSTITUTION: A hexahydro-1,2-benzisoxazol derivative represented by the following formula, wherein Xn is a hydrogen, a C1-C3 alkyl group, a C2-C4 alkenyl group, a C2-C4 alkynyl group, a C1-C3 alkoxyl group, a C1-C3 haloalkyl group, a C1-C3 thioalkyl group, a C1-C3 alkylsulfenyl group, a C1-C3 alkylsulfonyl group, a halogen group, a nitro group, a nitrile group, or a composite substituent thereof; Yn is a hydrogen, a C1-C6 alkyl group, a halogen group, a nitro group, a nitrile group, or a composite substituent thereof; Yn is a hydrogen, a C1-C3 alkyl group, a halogen group, a nitro group, a nitrile group, or a composite substituent thereof; and R is a hydrogen or a methyl group.
Abstract:
3-(Aminooxoacetyl)-2-(2-imidazoline-2-yl) pyridine derivs. and their salts of formula (I) are new. In (I), R1=C1-4 alkyl; R2=C1-4 alkyl, C3-5 cycloalkyl or C1-4 alkyl opt. substd. by 1-4 F atoms; R3=H, C1-3 alkyl opt. substd. C2-4 alkenyl or C2-4 alkynyl; R4=R3 or phenyl, benzyl, pyridyl, furanyl, thiophenyl, benzofuranyl, dihydrobenzofuranyl, benzothiophenyl, indolyl, indolinyl, opt. Substd. or R3 and R4 together may form a 3-7 membered ring contg. 0-3 double bonds, or 0-3 O, N or SOn (n = 0- 2); W=O or S; X=H, C1-4 alkyl, C1-4 alkoxy or halogen; Y and Z=H, halogen, C1-6 haloalkyl or C1-6 alkylamino. Cpds. (I) are herbicides or plant growth modulators.