39 results about "Alkyl radicals" patented technology

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 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 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.

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.

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.

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.

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 ,

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.

The application discloses a preparation method of a chiral sulfimine compound and belongs to the technical fields of visible light catalysis and organic synthesis. N -[(9 R )-6'-methoxyoctanosyl]-8-quinolinesulfonamide as a chiral ligand, fluorobenzene as a solvent, under the action of a copper salt and an oxidant, under visible light irradiation at room temperature in a protective atmosphere, the copper salt, the sulfenamide compound and N -[(9 R )-6'-methoxyoctanosyl]-8-quinolinesulfonamide form a copper complex, the copper complex enters an excited state under visible light irradiation, cleaves the oxidant through an energy transfer or single electron transfer process, generates a highly active free radical, the free radical activates an inert carbon-hydrogen bond to generate an alkyl free radical and reacts with the sulfenamide in the copper complex, asymmetric sulfuration of the inert carbon-hydrogen bond is realized, and the chiral sulfimine compound is obtained.

The present application relates to the technical field of waste plastic pyrolysis, and particularly relates to a method and system for increasing the content of alkanes in waste plastic pyrolysis oil gas, which comprises the following steps: (1) mixing saturated alkanes with waste plastics after preheating to obtain a mixture; (2) performing pyrolysis reaction on the mixture to obtain pyrolysis oil gas and semi-coke. The method for increasing the content of alkanes in waste plastic pyrolysis oil gas provided in the present application adds saturated alkanes during waste plastic pyrolysis, and the saturated alkanes can provide small-molecule alkyl radicals below C9 for the pyrolysis reaction, so as to promote the waste plastic itself to produce more alkanes, and significantly increase the content of light oil fraction in the pyrolysis oil gas.

The application discloses a kind of photo-thermal regulation's anaerobic sclera crosslinking nano-composite material and its preparation method and application, for the technical bottleneck of lacking anaerobic crosslinking agent for the inhibition of myopia development of sclera collagen crosslinking technology, develop a kind of not dependent on oxygen, photo-thermal regulation's nano-composite crosslinking agent PHIONs-GQDs-AIBI nano system.Based on the good photo-thermal performance and synergistic effect of mesoporous iron oxide nanoparticles (PHIONs) and graphene quantum dots (GQDs), the near-infrared excitation light energy is efficiently converted into heat energy, and the heat energy is efficiently transmitted to the free radical initiator (AIBI) through the excellent thermal conductivity of GQDs. Make AIBI decompose to produce an anaerobic radical under high heat excitation, that is, alkyl radical, for the crosslinking of sclera collagen.

The present invention relates to the use of a poly(2-oxazoline) comprising units of formula (I), where R is a linear or branched alkyl radical comprising 1 to 18 carbon atoms or a substituted or unsubstituted cycloalkyl radical comprising 3 to 18 carbon atoms, which may contain, within or outside the main chain or in a heterocycle, one or more heteroatoms selected from oxygen (O), nitrogen (N) and sulfur (S), for improving the extensibility of a crosslinked glycerol polyester, in particular compared to a glycerol polyester crosslinked in the absence of such a poly(2-oxazoline) compound.

The invention discloses a preparation method of N-alpha alkylated tetrahydroisoquinoline, and belongs to the technical field of catalytic synthesis. The invention solves the problems of complex reaction conditions, tedious process and poor selectivity and substrate applicability in the prior art. The method is realized through visible light catalysis, a tetrahydroisoquinoline compound without a protecting group is taken as a reactant, alkyl carboxylic acid is taken as an alkyl free radical source, and a target alkylate is prepared through room temperature reaction under visible light irradiation in a reaction system containing a photocatalyst, ferric salt and NCS. The method disclosed by the invention is convenient to operate, mild in reaction condition and simple and easily available in raw materials, can efficiently realize reaction only through basic photochemical conditions, and has a huge potential large-scale application value in the field of organic synthesis.

------ HYDROPHOBIC ORGANIC LIQUID COMPOSITIONS FOR THE EXTRACTION OF A MONOVALENT OR DIVALENT ANION SALT FROM SALT WATER OR BRINE This composition comprises: (A) at least one cation-extracting compound having a Log K complexation constant for this cation in methanol at 25°C of at least 1; (B) at least one hydrophobic, diprotic organic compound solvating the complementary anion of the cation; and (C) at least one hydrophobic polar organic diluent having a flash point above 60°C.The component(s) (B) is or are chosen from the compounds of formula (I): RA-NH-RB-NH-RC in which RA and RC each independently represent one of a monovalent aromatic or heteroaromatic radical, possibly substituted; a radical –C(=X1)-RA,C, where X1 represents O or S and RA,C represents an aromatic or heteroaromatic radical; an alkyl or alkoxyl radical, linear or branched, or cycloalkyl or cycloalkyl-alkyl, these radicals being possibly substituted; and RB represents one of a divalent aromatic or heteroaromatic radical, possibly substituted; -C(=X2)-, where X2 represents O or S; an ethylene radical -CH2CH2-; and a radical *-C(=X3)-QC(=X3)-* where X3 represents O or S and Q represents a divalent aromatic or heteroaromatic radical, possibly substituted.

This invention provides a method for preparing α-BMIDA ester compounds. The method uses α-BMIDA propylene ester and potassium alkyl trifluoroborate as substrates, and generates α-BMIDA esters through intermolecular radical addition-protonation reaction under photocatalytic conditions. This achieves the goal of efficient and versatile synthesis of α-BMIDA esters with different functional groups. The use of α-BMIDA propylene ester as the core reaction unit effectively allows for reaction with various alkyl radicals from different sources or structures, enriching the variety of α-BMIDA esters. Furthermore, the method avoids the use of oxidants and diazo compounds. The yield of most synthesized α-BMIDA ester products is higher than 80%. It has the advantages of mild reaction conditions, simple steps, fast reaction rate, and high yield. The reactants used are readily available, and the catalyst is inexpensive, providing an economical and convenient solution and technical support for the large-scale preparation of α-BMIDA ester compounds.

This invention belongs to the field of organic synthesis and relates to a method for preparing organosulfur ether compounds using photocatalysis. A disulfide compound 1 and tetrahydrofuran undergo a coupling reaction under the action of a base and a catalyst, and under ultraviolet light irradiation, to obtain organosulfur ether compound 3. This invention provides a novel method for preparing organosulfur compounds. Under light irradiation, a photocatalyst extracts hydrogen atoms from tetrahydrofuran to obtain alkyl radicals, which are then converted into carbocations through redox reactions. Simultaneously, the disulfide ether generates sulfur radicals under light irradiation, which produce sulfide anions under alkaline conditions. The sulfide anions and carbocations then undergo a coupling reaction to obtain sulfide compounds. The method provided by this invention is rationally designed, with mild reaction conditions, is environmentally friendly, and has low cost, achieving a yield of up to 91%. It provides a new method for the synthesis of organosulfur ether compounds and has promising industrial applications.

A hair coloring process employing a lightening composition and a coloring composition comprising a direct dye, an aromatic compound, and a hydroxylated aliphatic solvent. The invention relates to a process for coloring keratin fibers, in particular human keratin fibers such as hair, comprising the application to said keratin fibers of a lightening composition and a coloring composition comprising: - one or more direct dye(s), - one or more compounds of formula (I): (I) in which Y represents a C1-C4 hydroxyalkyl group or a C1-C4 hydroxyalkyloxy radical, n denotes an integer ranging from 0 to 5, X, identical or different, represents a C1-C4 alkyl radical or a halogen, - one or more aliphatic hydroxylated solvent(s) comprising from 2 to 6 carbon atoms.

The application discloses an anti-aging recycled PP composite material and a preparation method thereof. The composite material comprises the following raw materials in parts by weight: recycled PP material 80-100 parts, high-density polyethylene 10-15 parts, modified additive 2-3 parts, and dicumyl peroxide 0.5-1 part. In the raw material melting and blending process, the modified additive is grafted with the molecules of the recycled PP material and the high-density polyethylene under the action of the dicumyl peroxide. The modified additive contains a hindered amine structure and a nickel complex structure in the molecules. The hindered amine structure is oxidized into a nitrogen-oxygen free radical under the conditions of light or thermal oxidation. The free radical can efficiently capture alkyl free radicals and alkoxy free radicals generated in the process of PP light aging, and block the free radical chain reaction. The nickel complex structure can capture excited state molecules generated in the process of PP light aging. After capturing energy, the nickel complex converts the energy into heat energy through non-radiative transition and releases the heat energy, thereby preventing the excited state molecules from causing PP chain rupture or oxidation reaction.

Two-phase composition for cleansing and / or removing make-up from keratin materials, consisting of separate aqueous and oily phases, comprising: a) at least one branched alkane containing from 8 to 18 carbon atoms; b) at least one delayer of formula (I) in which: R represents a linear alkyl radical having from 12 to 16 carbon atoms, R 1 and R 2 independently represent a C1-C4 alkyl radical, Q- represents an anionic counterion, in particular a halide ion such as chloride; c) at least one chelating agent chosen from aminocarboxylic acids and salts thereof, and d) at least one non-ionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide, in which the composition does not contain silicone. Also a process for cleansing and / or removing make-up from keratin materials, in particular the skin, comprising shaking the composition according to the application to form an emulsion, applying said emulsion to the keratin materials, in particular the skin, and rinsing off said composition after an optional period of time.

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.

The present invention relates to a method for the isomerization dehydration of a feedstock comprising at least one primary monoalcohol, of formula R—CH2—OH, in which R is a nonlinear alkyl radical of general formula CnH2n+1 where n is an integer between 3 and 20, the method comprising an isomerization dehydration step carried out in the gas phase, at a weighted mean temperature of between 200 and 300° C., at a pressure of between 0.1 and 1 MPa, at a weight hourly space velocity (PPH) of between 1 and 25 h−1, in the presence of a catalyst comprising at least one zeolite, wherein the zeolite has at least one series of channels, the pore opening of which is defined by a ring of eight oxygen atoms (8MR) and has a mesopore volume of 0.10 ml / g or greater.