Abstract: A composition for combatting fungal and bacterial diseases in plants is disclosed which contains, as the active ingredient, a compound of the formula: ##STR1## in which: R.sub.1 is hydrogen or an alkyl radical containing from 1 to 6 carbon atoms, R.sub.2 is an alkyl radical containing from 1 to 18 carbon atoms, R.sub.1 and R.sub.2 can additionally form an ethylene or propylene chain which is optionally substituted by alkyls containing from 1 to 3 carbon atoms, and R.sub.3 and R.sub.4, which are identical or different, are hydrogen, an alkyl radical containing from 1 to 18 carbon atoms, a cycloalkyl radical containing from 3 to 7 carbon atoms, an alkenyl radical containing from 3 to 18 carbon atoms, the phenyl radical or the benzyl radical, in association with an inert carrier which is acceptable in agriculture.

Abstract: The invention relates to sulphur-containing products with an amide group, which are derived from aniline.These compounds have the formula: ##STR1## They are used as anti-fungal agents.

Abstract: N-substituted oligo-imides of the formula: ##STR1## in which D represents a divalent radical selected from the group comprising: ##STR2## in which m is 0 or 1, Y is hydrogen, chlorine or methyl, n is a positive integer of 5 or less, and R is an organic radical of valency n, containing up to 50 carbon atoms, are prepared by reacting an anhydride of the formula: ##STR3## with an amine of the formula:R----NH.sub.2).sub.n [III]in which formulae D, R and n are as above defined, said reaction being carried out in the presence of a catalyst system comprising a mixture of a compound (1) and a compound (2), (1) being a strong inorganic or organic oxygen-containing acid and (2) being an ammonium salt of such acid, said ammonium salt being di-, tri- or, preferably, tetra-substituted on the nitrogen atom by organic radicals.

Abstract: N-substituted oligo-imides of the formula: ##STR1## in which D represents a divalent radical selected from the group comprising: ##STR2## in which m is 0 or 1, Y is hydrogen, chlorine or methyl, n is a positive integer of 5 or less, and R is an organic radical of valency n, containing up to 50 carbon atoms, are prepared by reacting an anhydride of the formula: ##STR3## with an amine of the formula:R--NH.sub.2).sub.n [III]in which formulae D, R, and n as above defined, said reaction being carried out in the presence of a catalyst system comprising a mixture of a compound (.alpha.) and a compound (.beta.), being a strong inorganic or organic oxygen-containing acid and (.beta.) being a salt of such acid with a cation selected from the group comprising pyridinium, quaternary phosphonium and tertiary sulfonium cations.

Abstract: A process of preparing a N-substituted imide as disclosed, which is carried out in accordance with the equation: ##STR1## wherein R is an alkyl radical containing 1 to 8 carbon atoms, or an aryl radical having 1 or 2 phenyl rings bearing up to 5 substituents selected from the group consisting of 1 to 3 atoms of halogen, 1 to 2 nitro, amino, or hydroxy groups, 1 to 4 alkyl radicals, and 1 to 2 alkoxy or alkylthiol radicals each containing 1 to 4 carbon atoms, or a hexyl radical, optionally substituted;R' is a single bond or a hydrocarbon chain containing from 1 to 4 carbon atoms, in which two contiguous carbons may belong to a phenyl ring, said hydrocarbon chain being saturated or unsaturated and optionally substituted andR" is a hydrogen atom, an alkaline metal atom, an ammonium atom or a lower alkyl having 1 to 4 carbon atoms, wherein the cyclization of the amic acid, R--NH--CO--R'--COOR" is carried out in the presence of a mixed catalyst which results from the association of the formula, A B, in which A is

Abstract: Aluminum ethyl phosphite, useful as a plant fungicide, is made in an industrial process in high yield and good quality by reacting an excess of a ternary mixture of diethyl phosphite, monoethyl phosphite and phosphoric acid, with alumina at 20-200.degree. C. under subatmospheric pressure, while eliminating water formed during the reaction.

Abstract: New cyclic diphosphorous compounds are disclosed together with fungicidal compositions containing same useful in a process for controlling fungal plant infestations.

Abstract: Compounds having herbicidal properties having the formula: ##STR1## in which: R.sub.1 is a phenyl radical of the formula: ##STR2## WHERE A is a hydrogen atom, a halogen atom, a lower alkyl of 1-5 carbons, a halogenated lower alkyl of 1-5 carbons, or an alkoxy radical, an alkylthio radical, an alkylcarbamoyloxy radical, the alkyl portion of all these radicals containing from 1 to 5 carbon atoms;B is a phenyl radical, a phenoxy radical or a phenylthio radical which can contain from 1 to 5 halogen atoms on the nucleus, an alkyl radical containing from 1 to 5 carbon atoms or the trifulormethyl radical;m is an integer from 1 to 5; andn is 0 or 1, m + n being at most equal to 5; orR.sub.1 is an alicyclic radical, the ring containing from 3 to 10 carbon atoms;R.sub.2 is a hydrogen atom, an alkyl radical containing 1 to 5 carbon atoms, an optionally substituted phenyl radical;R.sub.3 and R.sub.4 are optionally substituted alkyl radicals containing from 1 to 5 carbon atoms, optionally substituted phenyl radicals;R.