Abstract: The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenyl or phenylalkyl radical, R.sub.2 represents an alkyl, alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, a phenylalkenyl radical, an optionally substituted phenyl radical, a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n -- wherein n is 2, 3, or 4 and R.sub.4 represents an optionally substituted alkyl radical or a phenyl radical, R.sub.3 represents a hydrogen atom, an alkyl, alkenyl or phenyl radical.The compounds of formula I have been found to be useful as stabilizers for vinyl resins.

Abstract: 1-Pyrrole- and 1-pyrrolidine-carboxylic acid derivatives corresponding to the general formula: ##STR1## in which R represents an alkyl radical having from 1 to 4 carbon atoms, preferably ethyl, and Am represents a group: ##STR2## wherein R.sub.1 represents a 3-oxo-alkyl radical ##STR3## or a 3-oxo-alkenyl radical ##STR4## and R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are identical, each represent hydrogen, ##STR5## R.sub.3 representing an alkyl radical having from 1 to 5 carbon atoms with the proviso that when R.sub.1 and R.sub.2 are simultaneously hydrogen, Am represents the group A.The novel derivatives are useful as intermediates for synthetizing azaprostaglandines.

Abstract: The chemical compounds of the invention are useful as the active compound in drugs because of their anticonvulsant and/or antianoxic activity. They have the general formula ##STR1## wherein Z is a hydroxyl group; a group--OM wherein M is an alkali metal atom or an equivalent atom fraction of an alkaline-earth metal or an amino group such as --NH.sub.2, and R is a linear or branched alkyl group containing from 1 to 9 carbon atoms, and optionally substituted by one or more halogen atoms; a linear or branched alkenyl or alkynyl, alkoxyalkyl, or acylalkyl group containing from 2 to 9 carbon atoms and optionally substituted by one or more halogen atoms; an aryl or arylalkyl or aryloxyalkyl group comprising at least one aromatic radical and an alkyl chain having from 1 to 4 carbon atoms.

Abstract: The invention relates to 2-(4'-chloro-phenylthio)-benzonitrile, to its process of preparation and to its use for preparing 2-chlorothioxanthone.2-Chloro-thioxanthone prepared from the compound of the invention is useful as a photoinitiator for the reticulation of synthetic resins and as an intermediate for preparing pharmaceuticals.

Abstract: .omega.-Dialkylalkanoic acid derivatives of the formula: ##STR1## in which R.sub.1 and R.sub.2, which can be the same or different, each represent an alkyl radical having from 1 to 4 carbon atoms and n represents 0, 1, 2 or 3.They possess a competitive inhibitory activity with respect to .gamma.-aminobutyric .alpha.-ketoglutaric transaminase as well as antianoxic and anticonvulsant properties and they are useful for treating central neurological disorders, whether resulting or not from cerebral ischemia, and disorders relating to the field of neuropsychiatry.

Abstract: The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenylalkyl radical, R.sub.2 represents a straight-chain alkyl, a straight- or branched-chain alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, or a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n --wherein n is 2, 3 or 4 and R.sub.4 represents a substituted alkyl radical.The compounds of the foregoing formula have been found to be useful as stabilizers for vinyl resins.

Abstract: Urea derivatives of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which are the same or different, each represent a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R.sub.4 and R.sub.5, which are the same or different, each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical having from 1 to 5 carbon atoms, R.sub.1, R.sub.2 and R.sub.3 being such that:(a) only one of these radicals can represent an alkenyl or alkynyl group having an unsaturated bond in the .alpha.,.beta.-position with respect to the methylurea radical, in this case, each of the other two substituents represents an alkyl radical,(b) the sum of their carbon atoms is never inferior to 4.They are useful as anxiolytic and antiagressive agents.

Abstract: A process for preparing 5-nitro-2-thenoic acid by oxidation of the corresponding aldehyde is described.

Abstract: A process for preparing methyl-nitrothenoate and methyl-nitrofuroate by oxidation of the corresponding aldehyde is described.

Abstract: Synthetic resin compositions based on vinyl polymers or copolymers are stabilized against degradation by both heat and light by the incorporation therein of a 1,4-dihydropyridine derivative represented by the general formula: ##STR1## wherein R represents a straight or branched-chain saturated or unsaturated alkyl radical containing from 9 to 22 carbon atoms. The stabilizer can be present in an amount of from 0.01 to 0.5 percent by weight, based on the vinyl resin. The vinyl resin may be, for example, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer or a vinyl chloride-vinylidene chloride copolymer. The stabilized vinyl resins can be used in the manufacture of food packaging materials and containers and also of flooring tiles and recording discs.Some of the dihydropyridine derivatives are novel compounds.

Abstract: This invention relates to new associations of a compound of the formula: ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom, an alkyl, alkoxy or hydroxy radical and R represents a hydrogen atom or an alkyl or alkoxy radical, and of a compound of the formula: ##STR2## wherein R.sub.3 represents an alkyl, alkenyl, alkynyl or aralkyl radical or a radical of the formula R.sub.4 --O(CH.sub.2).sub.n --, wherein R.sub.4 represents an alkyl or phenyl radical and n is 2, 3 or 4.The associations according to the invention are stabilizers for vinyl resins.

Abstract: Methylamine derivatives of the formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R.sub.1 and R.sub.3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R.sub.2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R.sub.2 represents an alkenyl radical of the formula CH.dbd.CH--R.sub.6 or an alkynyl radical of the formula C.tbd.C--R.sub.6, in which R.sub.6 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R.sub.1 and R.sub.3 each represent an atom of hydrogen or an alkyl radical, R.sub.4 and R.sub.5, which are the same or different, each respresent a hydrogen atom, a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 5 carbon atoms or an .omega.-hydroxyalkyl radical containing from 2 to 5 carbon atoms or R.sub.4 and R.sub.

Abstract: 3-Thienyl-acetate derivatives of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, a cycloalkyl or an aralkyl radical, R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are taken together to form a cyclic group with the carbon atom to which they are attached, represent a polymethylene radical having from 2 to 5 carbon atoms, are prepared from a mixture consituted by a compound of the formula: ##STR2## wherein R.sub.3 has the meaning given above and an organic halide of the formula:R.sub.4 Xwherein X represents fluorine, chlorine, bromine or iodine and R.sub.4 represents an alkyl, cycloalkyl or aralkyl radical or --CH.sub.2 (CH.sub.2).sub.n X in which n is an integer in the range of from 1 to 4 inclusive and X has the meaning given above, which mixture is added to an alkali metal hydride in dimethylformamide, at a temperature between -20.degree. C. and -5.degree. C., and allowed to react, in one step, at a temperature between -20.degree. C. and -5.degree. C.

Abstract: The invention relates to decahydroquinoline derivatives represented by the general formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein R.sup.1 represents an alkyl or alkoxy group, a lower dialkylamino group, an optionally substituted phenyl group, a heterocyclic group; R.sup.2 represents an alkyl group, an optionally substituted phenyl group, a naphthyl group, an unsaturated heterocyclic group, an aralkyl group or an alicyclic group; and R.sup.3 represents a substituted furyl group, an aralkyl group or a group represented by the general formula: ##STR2## wherein A represents an alkylene group; Y represents an oxygen or sulphur atom, a carbonyl, carbonyl-hydroxyimino, carbonyl-hydrazono or sulphoxide group, or a group; ##STR3## n is O or an integer of from 1 to 4, with the proviso that when n is O, Y represents a carbonyl group; and R.sup.4 and R.sup.5, which are identical or different, each represent hydrogen, a halogen atom or a methyl, methoxy or acetyl group.

Abstract: Novel aminoglycoside-aminocyclitol derivatives corresponding to the general formula: ##STR1## wherein R.sub.1 and R.sub.2, which are different, represent hydrogen or CH.sub.2 NH.sub.2 and R is selected from the group consisting of: ##STR2## wherein R.sub.3 represents NH.sub.2 or OH and R.sub.4 represents ##STR3## wherein R.sub.5 represents hydrogen or methyl and the pharmaceutically acceptable acid addition salts thereof.They are useful as antibiotics.

Abstract: Process for the preparation of di-n-propyl acetonitrile of the formula: ##STR1## whereby, in a single step, sodium n-propylate in n-propanol medium is added to a reaction medium which is formed of a cyanacetate of general formula: ##STR2## in which R represents an alkyl radical having from 1 to 4 carbon atoms, and n-propyl bromide or iodide, the alkylation reaction taking place under reflux, the crude ester obtained is saponified with a 10 to 20% solution of sodium hydroxide or potassium hydroxide, the resulting salt is acidified with a strong acid, to give crude di-n-propyl cyanacetic acid, which is decarboxylated by heating at a temperature between 140.degree. C. and 190.degree. C., so as to obtain the di-n-propyl acetonitrile.

Abstract: Indole derivatives of the formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl radical, R.sub.2 and R.sub.3, which are the same or different, each represent a hydrogen atom, a methyl or ethyl radical, a benzyl radical or represent together a pentamethylene, hexamethylene, oxydiethylene or N-methylaminodiethylene chain, forming thus a cycle with the nitrogen atom, R.sub.4 represents a phenyl, 2', 4'-dimethyl-phenyl, isopropyl, cyclopropyl, 1-methyl-cyclopropyl, cyclopentyl or cyclohexyl radical, R.sub.5 represents a hydrogen atom, a branched- or straight-chain alkyl radical containing from 1 to 3 carbon atoms, a methylthio or ethylthio radical or a straight-chain acyl radical containing from 2 to 6 carbon atoms, R.sub.6 represents a hydrogen atom or a halogen atom, a methyl, methoxy, hydroxy, carboxy, nitro, amino, methylamino or dimethylamino radical, R.sub.7 represents a hydrogen atom or a halogen atom and n is 1 or 2, with the proviso that two at least of the groups R.sub.5, R.sub.

Abstract: The invention relates to new compounds of the general formula : ##STR1## wherein X represents a hydrogen or halogen atom, R.sub.1 and R.sub.2, which are the same or different, each represent a hydrogen atom or a methoxy radical and R.sub.3 represents an alkyl or aryl radical, with the proviso that at least one of the substituents R.sub.1 and R.sub.2 is not a hydrogen atom.The compounds of formula I are useful for preparing stabilizers for thermoplastic resins.

Abstract: 3-Thienyl-acetate derivatives of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, a cycloalkyl or an aralkyl radical, R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are taken together to form a cyclic group with the carbon atom to which they are attached, represent a polymethylene radical having from 2 to 5 carbon atoms, are prepared from a mixture consituted by a compound of the formula: ##STR2## wherein R.sub.3 has the meaning given above and an organic halide of the formula:R.sub.4 Xwherein X represents fluorine, chlorine, bromine or iodine and R.sub.4 represents an alkyl, cycloalkyl or aralkyl radical or --CH.sub.2 (CH.sub.2).sub.n X in which n is an integer in the range of from 1 to 4 inclusive and X has the meaning given above, which mixture is added to an alkali metal hydride in dimethylformamide, at a temperature between -20.degree. C. and -5.degree. C., and allowed to react, in one step, at a temperature between -20.degree. C. and -5.degree. C.

Abstract: Process for the preparation of di-n-propyl acetonitrile of the formula: ##STR1## whereby, in a single step, sodium n-propylate in n-propanol medium is added to a reaction medium which is formed of a cyanacetate of general formula: ##STR2## in which R represents an alkyl radical having from 1 to 4 carbon atoms, and n-propyl bromide or iodide, the alkylation reaction taking place under reflux, the crude ester obtained is saponified with a 10 to 20% solution of sodium hydroxide or potassium hydroxide, the resulting salt is acidified with a strong acid, to give crude di-n-propyl cyanacetic acid, which is decarboxylated by heating at a temperature between 140.degree. C. and 190.degree. C., so as to obtain the di-n-propyl acetonitrile.