Abstract: Benzoic acid derivatives useful as intermediates for the preparation of drugs and agricultural chemicals, particularly compounds having herbicidal activity; and easy and economical processes for the preparation of the same. The processes are specifically those represented by reaction formula for the preparation of compounds represented by general formulae (1) and (6).

Abstract: A thioacetamide compound represented by the formula (1) which is useful as an intermediate for an acrylonitrile derivative serving as an active ingredient for medicines and agricultural chemicals, especially insecticides/acaricides; a process for producing the compound; and a process for producing a 3-oxo-2-(2-thiazolyl)propanenitrile compound, characterized by reacting the compound represented by the formula (1) with a phenacyl halide.

Abstract: A process (1) for the preparation of 4-cyanoacetylpyrazoles of the general formula (I) wherein R1 is C1-6 alkyl, R2 is C1-6 alkyl or C1-6 haloalkyl, and X is hydrogen or C1-6 alkyl which comprises using a pyrazolecarboxylic acid halide and a cyanoacetate ester; a process (2) for the preparation of the same which comprises using a pyrazolecarboxylic acid and a cyanoacetate ester; a process (3) for the preparation of the same which comprises using a pyrazolecarbonitrile; and a process (4) for the preparation of the same which comprises using a haloacetylpyrazole. Furthermore, an industrially advantageous process for preparing pyrazolecarboxylic acids useful as intermediates in the above processes.

Abstract: A process for the preparation of (E)-3-(1-propenyl)-2-isoxazoline, characterized by reacting crotonaldehyde with hydroxylamine to form an oxime, and then converting the oxime into a nitrile oxide while reacting the nitrile oxide with ethylene.

Abstract: Bicycloheptene compounds represented by general formula (1) and being useful as intermediates for the production of agricultural chemicals or drugs (wherein X is hydroxycarbonyl, hydroxymethyl, halogenomethyl, nitromethyl, or methylthiomethyl); and a process for the preparation of compounds of general formula (1), characterized by reacting 5,5-dimethoxy-1,2,3,4-tetrachlorocyclopentadiene with a compound represented by general formula (2) (wherein X is as defined above)

Abstract: This invention relates to 3,6-diamino-2,5-pyrazinedicarbonitrile which is a red crystal and yellowish green fluorenscent substance and the methods of preparation from compounds represented by formula [I], ##STR1## (wherein R are aryl, alkyl, aralkyl or alkenyl or may be substituted), as a starting material, under acidic condition in the presence of oxygen.

Abstract: By the selective use of a homogeneous stable precursor solution in which no polymerization reactions immediately occur and which contains aromatic compounds such as pyrrole, thiophene, aromatic amines or their derivatives, oxidizing agents, and solvents, as a precursor solution of conductive polymer film, a homogeneous and tough conductive polymer film can be obtained when the said precursor solution is cast on a substrate and the solvents are evaporated to remove.

Abstract: This invention relates to 3,6-diamino-2,5-pyrazinedicarbonitrile which is a red crystal and yellowish green fluorescent substance and the methods of preparation from compounds represented by formula [I], ##STR1## (wherein R are aryl, alkyl, aralkyl or alkenyl or may be substituted), as a starting material, under acidic condition in the presence of oxygen.

Abstract: Aminoacetonitrile derivatives, where the 2-position of aminoacetonitrile is optionally substituted by alkylthio groups, arylthio groups and heterocyclicthio groups. The process for making such compounds comprises reacting hydrogen cyanide with the desired corresponding R-S-H and recovering the crystallized salt thereof. The aminoacetonitrile derivatives are useful as starting materials to produce pharmaceutical and agricultural intermediates such as benzomide derivatives with fungicidal and herbicidal activities.

Abstract: The present invention relates to a 2,3-diaminoacrylonitrile derivative or salts thereof, having the formula ##STR1## wherein R represents an alkyl group (which may be substituted by unsubstituted or substituted phenyl groups, halogen atoms, C.sub.1-6 alkoxycarbonyl groups, carboxy groups, C.sub.1-6 alkoxycarbonyl C.sub.1-6 alkylthio groups, hydroxy groups, mercapto groups, cycloalkyl groups or heterocyclic groups containing oxygen atoms); an alkenyl group; a cycloalkyl group; an aryl group (which may be substituted by halogen atoms, C.sub.1-6 alkyl groups, nitro-groups, unsubstituted or substituted phenyl or phenoxy groups or heterocyclic groups containing oxygen atoms or sulfur atoms).The 2,3-diaminoacrylonitrile derivative can be used as starting materials for the production of pharmaceutical and/or agricultural intermediates such as cyanoimidazoles, cyanopyrazines or other cyano-substituted heterocycles.

Abstract: Carbamic acid derivatives of the general formula: ##EQU1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of lower alkyl, cycloalkyl, phenyl and phenyl substituted with halogen,R.sub.3 is selected from the group consisting of hydrogen and lower alkyl,Each of X.sub.1, X.sub.2, Y.sub.1 and Y.sub.2 is selected from the group consisting of oxygen and sulfur,N is an integer from 1 to 2, are useful as fungicides.An exemplary specie is 2-(N-n-butylcarbomoylthio)ethyl N'-n-butylthiolcarbamate.