Abstract:
The invention relates to a method for producing m-substituted phenylalkanols of the formula (I), R1 denoting C1-C5-alkyl, and R2, R3, R4, and R5 independently denoting hydrogen or methyl, characterized in that a p-substituted phenylalkanol of the formula (II), where R1, R2, R3, R4, and R5 have the meanings given under formula (I), is isomerized in the presence of a Friedel-Craft catalyst to form an m-substituted phenylalkanol of the formula (I). The corresponding aldehydes known as fragrances and aroma chemicals can be formed as valuable products from the m-substituted phenylalkanols of the formula (I) by means of oxidation or dehydration.
Abstract:
The invention relates to a method for the production of isocyanates R-NCO by anodic oxidation of formamides of the general formula (I), wherein R is hydrogen or an arbitrary organic radical, wherein the electrolytic solution comprises at least one conductor salt in addition to the formamide (I).
Abstract:
The invention relates to a method for producing aliphatic aldehydes of the general formula (I) by reacting aldehyde of the general formula (II) with an aldehyde of the general formula (III), where R1 is hydrogen or a methyl group, R2 is a straight-chain or branched alkyl radical having 1 to 4 carbon atoms, and the two X are each hydrogen or together are a further C-C bond, in the presence of an aldol condensation catalyst to form the substituted octenal of the general formula (I) and subsequently optionally hydration, either continuously or in batches, to form the corresponding octanal of the formula (I). The invention is characterized in that the aldehydes of the general formula III and II are used in a molar ratio of III:II between 1.4:1 and 0.6:1.
Abstract:
The invention relates to a method for producing an amine, comprising the step of cathodic reduction of a corresponding oxime derivative of general formula (I), wherein R represents C1-6 alkyl or C2-6 alkenyl, which is optionally substituted with one or more substituents independently selected from the group consisting of phenyl, O-C1-6 alkyl, NH-C1-6 alkyl, N(C1-6 alkyl)2, OH and NH2; R1 represents H; C1-6 alkyl or C(O)-C1-6 alkyl and A represents a 5-, 6- or 7-membered hydrocarbon ring which is saturated or which has a double bond and wherein optionally at least one CH2 group is replaced by -O-, -S- -NH-, -N=, or -N(C1-6 alkyl)- and which is optionally substituted with one or more other substituents independently selected from the group consisting of phenyl, C1-6 alkyl, O-C1-6 alkyl, NH-C1-6-alkyl, N(C1-6 alkyl)2, OH and NH2; and the oxime derivative, with respect to the carbon ring having the substituent R, having an excess of the R or S form of at least 10 %.
Abstract:
The invention relates to a method for producing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The method for producing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical method for producing a mixture of 4-isopropylbenzaldehyddimethylacetal and 4-(1-alkoxy-1-methyl-ethyl)-benzaldehyddimethylacetal and intermediates thereby passing through, a hydrolysis step for forming the corresponding benzaldehydes, and a hydrating of said mixture, forming 4-isopropylcyclohexylmethanol (IPCHM).
Abstract:
The invention relates to a method for electrochemical sewage treatment in the presence of a preferably boron-doped diamond electrode and titanium dioxide.
Abstract:
máquina de lavar, processo para limpar fibras, detergente de lavanderia, método para usar uma máquina de lavar, fibra, kit de partes,e, esfera eletroalvejante. a presente invenção diz respeito a uma máquina de lavar que compreende células eletroquímicas, a um método para a limpeza eletroquímica de fibras, a detergentes para a limpeza eletroquímica de fibras e a fibras que são limpas desta maneira.
Abstract:
The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where R is C1-6-alkyl or C2-6-alkenyl which is optionally substituted by one or more substituents selected independently from the group consisting of phenyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; R1 is H; C1-6-alkyl or C(O)—C1-6-alkyl and A is a 5-, 6- or 7-membered hydrocarbon ring which is saturated or has a double bond and in which at least one CH2 group may, if appropriate, be replaced by —O—, —S——NH—, —N═ or —N(C1-6-alkyl)- and which may optionally be substituted by one or more further substituents selected independently from the group consisting of phenyl, C1-6-alkyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; wherein, based on the ring carbon bearing the substituent R, the oxime derivative has an excess of the R or S form of at least 10%.
Abstract:
The invention relates to a method for producing reactive zinc by means of electrochemical reduction, wherein iron or steel is used as the cathode material.
Abstract:
La invención proporciona un método para blanquear utensilios de cocina en una máquina lavavajillas, que comprende la etapa de activación in situ de un activador de blanqueo por medio de una especie de oxígeno reactivo, la especie de oxígeno reactivo que se genera in situ en el lavavajillas por electrólisis de una solución acuosa.