71 results about "Alkyl radicals" patented technology

The present invention discloses a method for preparing an indolinone compound containing a quaternary carbon center. The target compound is obtained by subjecting N-arylacrylamide to an intramolecular tandem oxidative cyclization reaction initiated by the addition of an intramolecular alkyl radical with a tertiary alkane in the presence of a copper catalyst. This novel synthetic route for indolinone compounds containing a quaternary carbon center offers advantages such as high efficiency, relatively mild reaction conditions, a wide range of substrate applicability, and high atom and step economies, and has potential applications in pharmaceutical synthesis.

The invention discloses an ultrasonic response quaternary ammonium salt polymer antibacterial agent and a preparation method thereof. The ultrasonic response quaternary ammonium salt polymer is prepared by the following steps: carrying out substitution reaction on azodiisobutylimidazoline and acryloyl chloride, then carrying out addition polymerization reaction with 4-aminomethylpiperidine, and then carrying out quaternization reaction with bromohexane. The obtained ultrasonic response quaternary ammonium salt polymer can be decomposed under the ultrasonic action to generate alkyl radicals, and has the sterilization effect. In addition, quaternary ammonium salt modification can improve the water solubility and the positive charge density of the polymer, and further improves the antibacterial performance.

A photoelectric synthesis method for ketone compounds, the present invention relates to the field of organic photoelectric synthesis technology. The present invention solves the technical problem that existing reaction technologies are difficult to achieve in-situ activation of aromatic formic acid and direct coupling with hydrocarbons to prepare ketone compounds. The present invention continuously irradiates the reaction system and passes a constant current, uses carboxylic acid and hydrocarbons as reactants, forms chlorine radicals through an iron catalyst, and the chlorine radical intermediates extract hydrogen from the hydrocarbons to obtain an alkyl radical. At the same time, an acyl nickel compound intermediate is formed at the cathode, and then the intermediate captures the alkyl radical, and a reduction elimination process occurs to obtain a ketone product. This reaction uses the electrons provided by the current in the system as a cheap and clean oxidant, avoiding the use of an external oxidant, and the reaction operation is simple and the conditions are mild. The ketone compounds prepared by the present invention are used in the field of treatment of neurodegenerative diseases.

A composition for producing polyurethane foam contains a polyisocyanate component and a polyol component, wherein the composition additionally contains at least one organic compound V which contains at least one radical RA selected from the group consisting ofwherein * denotes the bond to the remaining portion of the at least one organic compound V, and wherein R1 are independently of one another identical or different and selected from H or branched or linear alkyl radicals having 1 to 30 carbon atoms which optionally also contain heteroatoms.

A process for the preparation of a compound of the sterically hindered alkoxyamine class is described, the process comprises the step of alkylating a sterically hindered hydroxylamine compound to a corresponding sterically hindered alkoxyamine by reacting said sterically hindered nitroxyl compound with a compound capable of producing a carbon-central alkyl radical, typically a territorial or secondary alkyl radical, the compounds capable of generating carbon-center alkyl radicals are selected from thermal radical initiators that form radical species in the temperature range of 40 DEG C to 200 DEG C, and from photoinitiators that undergo light excitation when irradiated with UV light or visible light in the range of 180 to 700 nm, in particular UV light in the range of 180 to 380 nm, the compounds capable of generating carbon center alkyl radicals are typically selected from the class of organic peroxides, azo compounds, benzoyl derivatives, benzophenone derivatives, thioxanthone derivatives, benzoin derivatives, benzoyl phosphine oxide derivatives, and the like. The invention relates to a peroxide, for example, selected from the group consisting of diacyl peroxides of formula (A), peracid esters of this formula (A), and oxalic acid peracid esters of formula (D) R-CO-O-O-Z-R (A), r-Z ''-X-CO-CO-O-O-Z''-R (D) wherein each R independently represents a primary or secondary alkyl or cycloalkyl group, preferably comprising from 1 to 15 carbon atoms, and X is oxygen-O-or peroxy-O-O-, Z represents CO or an alkylene group bonded to a quaternary carbon atom, the quaternary carbon atom being an alkylene group of formula (C) R '-C-R' (C), wherein each R'is selected from alkyl groups having 1 to 15 carbon atoms, and Z "represents the alkylene group bonded to a quaternary carbon atom having the formula (C). The described process produces the corresponding O-alkylated derivatives of the sterically hindered hydroxylamines, typically compounds of the class referred to as N-O-alkyl HALS, with very high selectivity and conversion and without the need for the use of catalysts, in particular metal catalysts.

The present invention relates to an isomerizing dehydration process for a feed comprising at least one primary monoalcohol of formula R-CH2-OH, wherein R is a nonlinear alkyl radical of general formula CnH2n+1, where n is an integer between 3 and 20. The process comprises an isomerizing dehydration step carried out in the gas phase at a weighted average temperature between 200 and 300°C, a pressure between 0.1 and 1 MPa, and a weight-hourly spatial velocity (WHV) between 1 and 25 h⁻¹, in the presence of a catalyst comprising at least one zeolite. The zeolite has at least one series of channels whose pore opening is defined by an 8-oxygen ring (8MR) and a mesoporous volume greater than or equal to 0.10 mL / g. Figure 2 to be published

The present invention describes a composition for producing polyurethane foams, comprising a polyisocyanate component and a polyol component, in which the composition additionally comprises at least one organic compound V comprising at least one group RA selected from the group consisting of: wherein * represents a bond to the remainder of the organic compound V; and wherein R1, independently of each other, are the same or different and are selected from H or branched or linear alkyl groups having 1 to 30 carbon atoms, which may also contain heteroatoms, such as preferably O and / or N.

The invention relates to the field of household appliance plastic packaging materials, in particular to a high-temperature-yellowing-resistant unsaturated polyester resin molding compound based on a nano material and a preparation method of the high-temperature-yellowing-resistant unsaturated polyester resin molding compound. The composition comprises the following components in parts by weight: 60-75 parts of unsaturated polyester resin; 25-40 parts of a low shrinkage agent; 1-3 parts of a nano material; 1-3 parts of an organic antioxidant; 3-5 parts of an internal release agent; 1-2 parts of a curing agent; 280 to 300 parts of a filler; 55 to 65 parts of chopped glass fiber; the high-temperature-yellowing-resistant unsaturated polyester resin molding compound has long-acting high-temperature-yellowing-resistant performance, cerium oxide reacts with phosphite ester at high temperature, P (I) in the phosphite ester has strong reducibility, tetravalent cerium ions in CeO2 have strong oxidizability, a complex containing Ce-P-O bonds is generated, and therefore the molding compound can be used for preparing the high-temperature-yellowing-resistant unsaturated polyester resin molding compound. Compared with single CeO2 or phosphite ester, the compound shows stronger free radical capturing capacity, and alkyl free radicals and alkoxy free radicals can be more effectively quenched; and the capability of decomposing hydroperoxide is far better than that of independent phosphite ester and cerium oxide.

The invention relates to novel agrochemical compositions comprising: a) at least one triazole fungicide; b) carbonyl containing solvent; and c) N-alkyl pyrrolidone of formula (I) wherein R1 is a straight or branched, saturated or unsaturated, substituted or unsubstituted hydrocarbon group having from 5 to 10 carbon atoms. The invention also relates to the use of a combination of the abovementioned N-alkyl pyrrolidone of formula (I) with a carbonyl containing solvent for increasing the efficacy of one or more triazole fungicide. The invention further relates to an agrochemical composition comprising: a) at least one triazole fungicide; b) a carbonyl containing solvent; c) N-alkyl pyrrolidone of formula (I) and d) an effective amount of compound of formula (II) wherein R2 is linear or branched, saturated or unsaturated alkyl radical having from 14 to 20 carbon atoms; or R2 is linear or branched, saturated or unsaturated acyl radical having from 14 to 20 carbon atoms; or any combination thereof, Z is selected from oxygen or nitrogen atom, m is an integer equal to 2, n is an integer equal to 3, x is an integer of from 3 to 50 and y is an integer of from 0 to 50. The invention relates to the use of a compound of formula (II) for increasing the efficacy of one or more triazole fungicide; and to a method of treating plants or plant parts with a combination of one or more triazole(s) fungicide with compound of formula wherein the compound of formula (II) is for increasing the efficacy of the one or more triazole(s).

The present invention relates to a urea-urethane composition comprising (a) at least one urea-urethane compound with a least one terminal group of formula (I) wherein R1 is a radical selected from the group consisting of C4 to C32 alkyl, C4 to C22 alkenyl, C5 to C12 cycloalkyl, C7 to C24 aralkyl, C6 to C24 aryl, a radical of formula R6-(O-CxH2x]y -, a radical of formula R6-[O-C(=O)-CwH2w]z - and a radical of formula R6-(O-CxH2x)y- [O-C(=O)-CwH2w]z -; R3 is a divalent group selected from the group consisting of an aromatic group and an araliphatic group; R6 is C1 to C32 alkyl; x is an integer from 2 to 4; w is an integer from 2 to 12; y and z is an integer from 1 to 20; (b) at least one aprotic solvent and (c) at least one alkyl ammonium salt, whose alkyl radicals independently of another is unsubstituted or hydroxy-substituted, a process for preparing the composition and the use of said composition in coating compositions as a thixotropic agent for coating formulations.

The present invention relates to the use of a fluid lubricant base comprising at least one biosourced and biodegradable compound having formula (I) in order to lubricate devices and / or machines, such as wind turbines, wherein said at least one compound having formula (I) corresponds to formula (I) in which R1, R2 and R3 are, independently, linear or branched saturated hydrocarbon groups comprising at least 16 carbon atoms, at least one group among R1, R2 and R3 comprises, on the hydrocarbon chain thereof, at least one ester group O—CO—R4, where R4 is a linear or branched alkyl radical comprising from 1 to 10 carbon atoms, preferably from 1 to 6 carbon atoms. The lubricant base has an acid number, in mg KOH / g measured according to the standard ISO 6618, which ranges from 0 to 0.5. The present invention further relates to a method for manufacturing the lubricant base as defined above and to the lubricant base thus obtained.

A catalyst component for the polymerization of olefins obtained by a process comprising: (a) reacting in an inert hydrocarbon suspension medium a Mg(OR1)(OR2) compound, in which R1 and R2 are identical or different and are each an alkyl radical having 1 to 10 carbon atoms, with a tetravalent transition metal compound having at least a Metal-halogen bond, used in amounts such that the molar ratio metal / Mg is from 0.05 to 5, thereby obtaining a solid reaction product dispersed in a hydrocarbon slurry and (b) contacting the product obtained in (a) with ethylaluminum dichloride.

The invention discloses a zinc porphyrin modified electrode, a preparation method of the zinc porphyrin modified electrode and application of the zinc porphyrin modified electrode in synthesis of ibuprofen from CO2 and aryl halide through electro-catalysis. According to the invention, a zinc porphyrin polymer is immobilized on carbon cloth through pre-assembly and electropolymerization, and a novel zinc porphyrin modified electrode (Zn-TPP-CC) is developed. The electrode shows excellent catalytic performance, and the ibuprofen yield is as high as 96%. Experiments show that the Zn-TPP-CC cathode effectively catalyzes an electrocarboxylation reaction and promotes the generation of alkyl radicals by forming a stable Zn-Cl intermediate, and the process is crucial to subsequent CO2 insertion, so that the total energy barrier of the reaction is remarkably reduced. Evaluation shows that 0.213 kg of CO2 can be fixed when 1 kg of ibuprofen is produced in the process, and compared with a traditional method, carbon emission is reduced by 70.1%. According to the invention, a new view angle is provided for CO2 recycling and green drug synthesis, and the potential of multiphase electro-catalysis in efficient utilization of carbon resources is manifested.

The application discloses an electrochemical synthesis N α A method for synthesizing azole compounds under mild electrochemical conditions through a three-component reaction of azole, aldehyde and alcohol N α In the electrolysis process, azole is oxidized into a nitrogen free radical at the anode, and aldehyde is reduced into a hydroxyalkyl free radical at the cathode, then the free radical coupling is carried out, and finally, intermolecular dehydration of alcohol is carried out to synthesize a series of azole compounds with an alkoxyalkyl group N α The reaction avoids the use of an acid catalyst, an additional oxidant and a reducing agent through a free radical active intermediate route, is low in production cost, is friendly to the environment, and is suitable for industrial large-scale production as shown by the feasibility of a kilogram-scale amplification experiment.​​​

This invention discloses a method for synthesizing β-pyridone derivatives, which is based on the photocatalytic β-C(sp) synthesis of 1-(o-iodoaryl)alkyl-1-one and cyanoaryl hydrocarbons induced by iodoaryl hydrocarbons via halogen atom transfer (XAT) and hydrogen atom transfer (HAT). 3 )-H arylation involves the generation of an aryl intermediate mediated by a diethylaminoethyl radical, followed by the formation of a distal alkyl radical intermediate from 1,5-HAT, and coupling with a cyanoaromatic hydrocarbon (the corresponding cyanoaromatic hydrocarbon radical intermediate generated via photoreduction). This method is applicable to a wide range of inactive, long-range C(sp) arylation. 3 The presence of H bonds provides a novel synthetic route for constructing derivatives such as β-pyridones. The method of this invention can be carried out at room temperature, with mild and simple reaction conditions, a wide range of substrate adaptability, and high yields of the target product.

Powder for preventing and / or treating perspiration and composition comprising same The present invention relates to a cosmetic powder, in particular for preventing and / or treating perspiration, in which the particles comprise: - at least one alkali metal metasilicate and - at least one chelating compound chosen from the phosphonic derivatives of the following formula (I): (I) where R represents an alkyl radical, linear or branched, cyclic or non-cyclic, saturated or unsaturated, comprising from 1 to 10 carbon atoms, and n represents an integer between 1 and 10, and amino acids. It also relates to the method for manufacturing said powder and the composition comprising such a powder.

A method for producing a melt-kneaded composition that includes performing melt-kneading of 3-methyl-1-butene polymer and an alkyl radical scavenger, in which the melt-kneading is performed at 300 to 380° C., and in which the melt-kneading is performed by injecting an inert gas into a melt kneader or the melt-kneading is performed by degassing the inside of the melt-kneader under reduced pressure, and a melt-kneaded composition.

The present invention discloses a method for preparing an indole-3-ylalkyl malonate compound. The method uses economical, cheap and readily available reaction raw materials, and is carried out under mild electrochemical conditions by reacting C (sp) with three components. 3 )–H / C(sp 2 )–H functionalization reaction, one-step construction to obtain indole-3-alkyl malonate compounds. This method is through C(sp 3 )‑H / C(sp 2 )-H functionalization regioselective pathway, with H2 as the only theoretical byproduct. Mechanistic studies suggest that the reaction proceeds via C(sp 3 )-H bond oxidation to generate alkyl radicals, radical addition to C=C bond, single electron oxidation and C(sp 2 Compared with existing methods, the preparation method of the present invention has the advantages of cheap and readily available raw materials, a wide range of reaction substrates, high yield of target products and good atom economy of the reaction.

The present application relates to the field of organic synthesis, specifically a method for synthesizing C3 fluorine alkyl substituted quinoxaline ketone derivatives from olefin derivatives and quinoxaline ketone derivatives under photocatalysis by using [bis(fluoroalkyl acetoxy)iodo] benzene as different fluorine alkyl sources. [Bis(fluoroalkyl acetoxy)iodo] benzene is used as a fluorine alkylating agent to generate fluorine alkyl radicals under photocatalysis, then the radicals add to olefin derivatives to obtain alkyl radicals, the alkyl radicals then add to quinoxaline ketone, and finally, after oxidation and deprotonation, C3 fluorine alkyl substituted quinoxaline ketone derivatives are obtained. The present application uses simple and stable [bis(fluoroalkyl acetoxy)iodo] benzene as a fluorine alkyl source to prepare C3 different fluorine alkyl substituted quinoxaline ketone derivatives from quinoxaline ketone and olefin derivatives in a three-component reaction without the action of photocatalysts. The synthesis method is simple and easy to operate, and different fluorine alkyl group substituted quinoxaline ketone derivatives can be quickly obtained.

The invention discloses a method for synthesizing functional pyrrole through photocatalysis of N-arylglycine and 1, 3-eneyne. According to the method, N-arylglycine is decarboxylated through photocatalysis to form an alpha-amino alkyl free radical, and the free radical and 1, 3-eneyne are subjected to free radical addition, cyclization and oxidative aromatization reaction to construct polysubstituted pyrrole. Pyrrole serves as a heterocyclic compound with great importance, widely exists in numerous drug compounds and bioactive molecules, shows electronic characteristics with great prospects in organic photovoltaic devices (OPVs) and organic field effect transistors (OFETs), is also a key structural unit in synthesis of pesticides, natural products and dyes, and has a broad application prospect. Powerful support is provided for multi-industry development, and the application prospect is wide. The polysubstituted pyrrole compound is synthesized through a one-pot method, and a new method is provided for preparing the novel polysubstituted pyrrole compound.

The invention discloses a photoinduction-based catalyst-free aryl cyano compound synthesis method, which comprises: dissolving alkyl trifluoroborate and cyano aromatic hydrocarbon in a polar solvent to form a homogeneous reaction system; performing anaerobic treatment on the homogeneous reaction system to obtain an anaerobic reaction environment; irradiating the homogeneous reaction system by adopting a light source containing ultraviolet light with the wavelength of 200nm-780nm to excite the alkyl trifluoroborate to crack to generate an alkyl free radical intermediate and boron tetrafluoride anions; the boron tetrafluoride anions and the cyano aromatic hydrocarbon form an EDA compound; and directly synthesizing the aryl cyano compound from the alkyl radical intermediate and the EDA compound. The synthesis result does not depend on a metal catalyst, an oxidant or a chemical additive, and the reaction conditions are mild, green and efficient.

This invention provides a simulation method for the generation of organic iodine based on the Kolbe electrolysis reaction, belonging to the field of spent fuel reprocessing technology. This method introduces iodine into the Kolbe electrolysis reaction and compares the intrinsic ability of different forms of iodine to react with alkyl radicals to generate organic iodine. Compared with traditional simulation experiments under irradiation conditions, the method of this invention can conveniently obtain alkyl radicals through electrochemical reactions, eliminates the interference of water radiolysis products in the irradiation environment, and provides a clear understanding of the organic iodine conversion capabilities of different forms of iodine; moreover, it does not require specific irradiation equipment and shielding measures, facilitating real-time control and sampling analysis of the reaction, and has better simplicity and operability.

Disclosed is a composition in the form of an oil-in-water emulsion and including: a) at least one oil; b) at least one cross-linked anionic polyelectrolyte; c) at least one water-in-oil emulsifying surfactant including an alkylpolyxyloside having a non-linear branched alkyl radical and having 10 to 36 carbon atoms; d) at least one oil-in-water emulsifying surfactant; e) at least one hydrophobic perfuming substance; and f) water.

The invention discloses a preparation method of a chiral thioimine compound, and belongs to the technical field of visible light catalysis and organic synthesis.The preparation method comprises the steps that a compound containing inert carbon-hydrogen bonds and a sulfenamide compound serve as raw materials, N-[(9R)-6 '-methoxyl cinchonin-9-yl]-8-quinoline sulfonamide serves as a chiral ligand, fluorobenzene serves as a solvent, and the chiral thioimine compound is prepared through a one-step reaction; under the action of a copper salt and an oxidizing agent, the copper salt, a sulfenamide compound and N-[(9R)-6 '-methoxyoctann-9-yl]-8-quinoline sulfonamide form a copper complex under the irradiation of visible light at room temperature in a protective atmosphere, the copper complex enters an excited state under the irradiation of the visible light, and the oxidizing agent is cracked through an energy transfer or single electron transfer process, so that the copper complex is obtained. The free radicals activate inert carbon-hydrogen bonds to generate alkyl free radicals, the alkyl free radicals react with sulfenamide in the copper complex, asymmetric vulcanization of the inert carbon-hydrogen bonds is achieved, and the chiral thioimine compound is obtained.

The application of an alkyl radical initiator in the preparation of a scleral collagen cross-linking drug and an oxygen-independent scleral collagen cross-linking method, which utilizes an alkyl radical initiator to cross-link type I collagen solution and scleral tissue, compared with the ultraviolet light / riboflavin cross-linking method, the reaction does not depend on the participation of oxygen, and may be more suitable for the sclera under the hypoxic state of myopia, and compared with the chemical cross-linking method, the cross-linking reaction is easier to control. The alkyl radical-induced collagen cross-linking has improved in terms of anti-enzyme degradation performance, thermal stability and biomechanical performance.

Abstract Compounds according to general formula (I) 0 CI MNCRA] R7' m 3 n formula (I) R1 R 2 in which M is Ge or Sn, RAr is Rs R3 R 4 R1, R2, R3, R4, R 5, independently of one another in each case, are -H, -F, -Cl, -OR', SR 6, -N(R 6)2, -CF3, -CN, -N02, -COOR, -CONHR, a branched, cyclic or preferably linear C1-2o alkyl, C2-2o alkenyl, C1-2o alkyloxy or a C2-2o alkenoxy radical, which can be interrupted one or more times by 0, S or -NR6 - and substituted by one or more polymerizable groups and / or radicals R 6, R6 is H, a branched, cyclic or preferably linear C1-2o alkyl or C2-2o alkenyl radical, R 7 is a chemical bond, an n-valent aromatic radical or a branched, cyclic or preferably linear C1-2o alkylene radical, which can be interrupted one or more times by 0, S or -NR6 - and substituted by one or more polymerizable groups, =0 and / or radicals R 6, n is 2 or 3 and m is 0 or 1. The compounds are particularly suitable as photoinitiators for radical polymerization and in particular for the production of dental materials. Abstract 2021201080 19 Feb 2021 C C M RAr R7 n R¹ ,

Cooling composition in the form of granules obtained by a process comprising the following steps: a) providing a cooling composition, wherein the cooling composition is a composition consisting of (A) 8 to 10 wt.% cooling agent (A) is selected from the group consisting of menthone glycerol acetal (FEMA GRAS 3807), menthone glycerol ketal (FEMA GRAS 3808), menthyl lactate (FEMA GRAS 3748), menthol ethylene glycol carbonate (FEMA GRAS 3805), menthol propylene glycol carbonate (FEMA GRAS 3806), menthyl N-ethyl oxamate, monomethyl succinate (FEMA GRAS 3810), monomenthyl glutamate (FEMA GRAS 4006), menthoxy-1,2-propanediol (FEMA GRAS 3784), menthoxy-2-methyl-1,2-propanediol (FEMA GRAS 3849) and the menthanecarboxylic acid esters and amides or acyclic carboxamides of the formula (I) where R' and R'' independently of one another are hydrogen, hydroxyl group or a branched, unbranched, cyclic alkyl radical having up to 25 C atoms, an aryl group having up to 10 C atoms, selected from substituted and unsubstituted phenyl, phenylalkyl, naphthyl and pyridyl radicals, or mixtures thereof, and (B) 15 to 35 wt.% alcohol selected from the group consisting of a C1 to C3 alcohol or mixtures thereof, and (C) 60 to 80 wt.% hydrophobic compound selected from the group consisting of essential oils, neutral oils, vegetable oils or mixtures thereof, b) Dissolving the cooling agent (A) in (B) and (C) completely to form a homogeneous mixture, keeping the temperature at 40 °C to 100 °C for complete dissolution of (A), c) spray granulating the homogeneous mixture obtained in step b) at a temperature of 35°C to 65°C to prevent recrystallization of (A), d) Obtaining a cooling composition in the form of granules, the particles having an average particle size of 0.3 mm to 0.9 mm.

A composition for topical application to the oral cavity, for the use in pregnant women to reduce the risk of preterm birth, comprising an ester of vitamin E with a carboxylic acid of formula R—COOH, in which R is an alkyl radical having 1 to 19 carbon atoms, or an alkenyl or alkynyl radical having 2 to 19 carbon atoms, and an oily vehicle; the ester of vitamin E can be selected from vitamin E acetate, n-propionate or linoleate, preferably alpha-tocopheryl acetate.

The invention discloses an electrochemical synthesis method and anticancer activity of aryl alkyl ketone, and belongs to the field of organic synthesis. A carboxylic acid derivative and a Katritzky salt are respectively used as an acyl electrophilic reagent and an alkyl free radical precursor, in the presence of a catalyst Ni (dme) Br2 and a ligand 2, 2 '-dipyridyl, a single electrolytic tank performs constant-current electrolysis, reductive coupling of the Katritzky salt and the carboxylic acid derivative is realized, the aryl alkyl ketone compounds with diversified structures are synthesized, and the highest yield is 86%. The method is mild in reaction condition, short in reaction time, good in functional group compatibility and wide in substrate application range; meanwhile, the synthesized compound has the activity of obviously inhibiting HCT-116 cancer cell proliferation, so that the compound has the anti-cancer activity on colon cancer and has potential medicinal value.

The present invention provides an antimicrobial compound having formula (I) where R1 is an alkyl radical having 4 to 18 carbon atoms or a cycloalkyl radical having 5 to 12 carbon atoms or a (poly)alkylene glycol radical having 1 to 6 alkoxy units or a phenyl radical or a benzyl radical, and R2 is an alkyl group having 2 or 3 or 4 carbon atoms, and R3 is hydrogen or an alkyl radical having 1 to 8 carbon atoms or a (poly)alkylene glycol radical having 1 to 6 alkoxy units or a phenyl radical or is a benzyl radical, and n is an integer from 1 to 15, and [(2+n) A-] represents a number of anions which provide a total of (2 + n) negative charges. The present invention further discloses a process for preparing the antimicrobial compound, use thereof, and a cosmetic or pharmaceutical composition.