Abstract: Mono-, di-, tri- and tetra-esters derived from an acid of the general formula:R--OHin which R represents an acyl radical of the general formula: ##STR1## in which n represents 0 or 1, m represents 0, 1, 2, 3 or 4, R.sub.1 and R.sub.2 each represent a straight- or branched-chain alkyl radical having from 1 to 5 carbon atoms, R.sub.3 represents hydrogen or a straight- or branched-chain alkyl radical having from 1 to 5 carbon atoms, the sum of the carbon atoms in R.sub.1 and R.sub.2 being from 4 to 10 when R.sub.3 represents hydrogen and the sum of the carbon atoms in R.sub.1, R.sub.2 and R.sub.3 being from 6 to 15 when R.sub.3 is different from hydrogen, or R.sub.1 and R.sub.2 when they are taken together represent a tetramethylene, pentamethylene or hexamethylene radical and R.sub.

Abstract: The invention relates to a combination of derivatives of dihydropyridine and .beta.-aminocrotonic acid derivatives intended for the stabilization of vinyl resins. The combination of a dihydropyridine derivative and a .beta.-aminocrotonic derivative gives rise to synergism of the stabilizing powers of each of those products.

Abstract: Process for introducing a substituent selected from branched- or straight-chain alkyl radicals having from 1 to 12 carbon atoms, aralkyl or cycloalkyl radicals in which the alkyl moiety has from 1 to 4 carbon atoms, into a carbon chain bearing a stable functional group the said carbon chain having at least one proton in .alpha.-position in relation to this functional group, process whereby, in a first step, this carbon chain is reacted with a complex base comprising a mixture of alkali metal amide and alkali metal alcoholate suspended in an anhydrous organic solvent to provide temporarily a carbanion, then in a second step this carbanion is reacted in an anhydrous organic solvent with an alkyl, aralkyl or cycloalkyl halide corresponding to the substituent to be introduced.

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: 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: 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: 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: This application relates to a new polyester of behenic acid and thiodiglycol, namely thiodiglycol dibehenate.The compound of the invention has been found to possess valuable properties as a lubricating agent for thermoplastic materials.This application relates also to a method of use of said compound as lubricating agent for thermoplastic materials.

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: 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.