Abstract:
Preparation of substituted biphenyl compounds (I), comprises reacting halobenzene compounds (II) with phenyl boronic acid compounds (IVa) and/or diphenyl boronic acid compounds (IVb) in a solvent or a diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand (III). Preparation of substituted biphenyl compounds of formula (I), comprises reacting halobenzene compounds of the formula (II) with phenyl boronic acid compounds of formula (IVa) and/or diphenyl boronic acid compounds of formula (IVb) in a solvent or diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand of formula (((Ar1) 2P-CH 2-)(R5)C(R4)(-CH 2-P(Ar1) 2)) (III). R1 : NO 2or NH 2; R2 : CN, halo, 1-4C-haloalkyl, 1-4C-haloalkoxy or 1-4C-haloalkylthio; R3 : H, CN or halo; Hal : Cl or Br; Ar1 : phenyl, which optionally contains 1-3 substituents comprising CH 3, CH 3O, F or Cl; either R4, R5 : 1-5C-alkyl or 3-6C-cycloalkyl; or R4R5 : 2-7-membered bridge, which optionally carries 1-8C-alkyl; and n : 0-3. An independent claim is included for 3,4,5-trifluoro-2'-nitrobiphenyl. [Image].
Abstract:
The invention relates to a method for producing cyclohexane by isomerizing a hydrocarbon mixture (KG1) containing methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. A flow (S1) originating from a steam cracking process is used as a starting material. The hydrocarbon mixture (KG1) is obtained from said stream (S1) in a device for removing aromatics. The hydrocarbon mixture has a reduced aromatic content in comparison with the flow (S1). (KG1) can also be (nearly) free of aromatics. In dependence on the type and amount of the aromatics remaining in the hydrocarbon mixture (KG1), in particular if benzene is present, a hydrogenation of (KG1) additionally can be performed before the isomerization. Furthermore, additional purification steps can optionally be performed before or after the isomerization or hydrogenation in dependence on the presence of other components of (KG1). Preferably high-purity cyclohexane (in accordance with specifications) is isolated from the hydrocarbon mixture (KG2) arising during the isomerization, wherein the specifications are given, for example, by the use of the cyclohexane for the production of caprolactam known to the person skilled in the art.
Abstract:
The invention relates to 5-isopropyl-3-aminomethyl-2-methyl-1-amino-cyclohexane (carvone diamine) and a method for the production thereof by a) reacting carvone with hydrogen cyanide, b) then reacting the carvone nitrile obtained in step a) with ammonia in the presence of an imine-forming catalyst, and c) subsequently reacting the reaction mixture that is obtained in step b) and contains carvone nitrilimine with hydrogen and ammonia on hydrogenation catalysts. The invention further relates to the use of carvone diamine as a curing agent for epoxy resins, as an intermediate product when producing diisocyanates, as an initiator entity when producing polyetherols, and/or as a monomer for producing polyamides.
Abstract:
The invention relates to a method for producing substituted biphenyls of formula (I), wherein R1 = nitro or amino, R2 = cyano, halide, C1-C4 alkyl halide, C1-C4 alkoxy halide or C1-C4 alkylthio halide, n = 0 to 3 and R3 = hydrogen, cyano or halide, characterized by reacting a halobenzene of formula (I1), wherein HaI represents chlorine or bromine, with a phenyl boronic acid (IVa) of a diphenyl borinic acid (IVb) or a mixture of (IVa) and (IVb) in a solvent or diluent in the presence of a base and of a palladium catalyst which consists of palladium and a bidentate phosphorus ligand of formula (III), wherein Ar represents optionally substituted phenyl and R4 and R5 represent C1-C8 alkyl or C3-C6 cycloalkyl each or together form a two- to seven-membered bridge which can optionally carry a C1-C6 alkyl substituent.
Abstract:
Ionic liquids dispersion involves using inert non-polar solvents in a suitable dispersion apparatus for producing stable droplets of ionic liquids. The produced droplet has a diameter of 100 mu m or less. The dispersion apparatus is selected from micro-mixer, high pressure homogenizer, reaction mixing pump or rotor-stator dispersion apparatus. An independent claim is included for a method for preparing homopolymers or copolymers with a weight average molecular weight (Mw) of 10,000-10,000,000, which involves preparing monomers by polymerization or copolymerization of olefinic monomers in liquid phase in presence of ionic liquids as a polymerization catalyst.
Abstract:
Preparation of substituted biphenyl compounds (I), comprises reacting halobenzene compounds (II) with phenyl boronic acid compounds (IVa) and/or diphenyl boronic acid compounds (IVb) in a solvent or a diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand (III). Preparation of substituted biphenyl compounds of formula (I), comprises reacting halobenzene compounds of the formula (II) with phenyl boronic acid compounds of formula (IVa) and/or diphenyl boronic acid compounds of formula (IVb) in a solvent or diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand of formula (((Ar1) 2P-CH 2-)(R5)C(R4)(-CH 2-P(Ar1) 2)) (III). R1 : NO 2or NH 2; R2 : CN, halo, 1-4C-haloalkyl, 1-4C-haloalkoxy or 1-4C-haloalkylthio; R3 : H, CN or halo; Hal : Cl or Br; Ar1 : phenyl, which optionally contains 1-3 substituents comprising CH 3, CH 3O, F or Cl; either R4, R5 : 1-5C-alkyl or 3-6C-cycloalkyl; or R4R5 : 2-7-membered bridge, which optionally carries 1-8C-alkyl; and n : 0-3. An independent claim is included for 3,4,5-trifluoro-2'-nitrobiphenyl. [Image].
Abstract:
Визобретениизаявленспособполучениязамещенныхбифениловформулы Iвкоторойзаместителиимеютследующиезначения: Rозначаетнитро, Rозначаетциано, галоген, C-C-галогеналкил, C-C-галогеналкоксиили C-C-галогеналкилтио, n означает 0, 1, 2 или 3, причемв случае n = 2 или 3 остатки Rмогутиметьодинаковыеилиразличныезначения, Rозначаетводород, цианоилигалоген, заключающийсяв том, чтогалогенбензолформулы IIвкоторой Hal означаетхлорилиброми Rи Rимеютуказанныевышезначения, вприсутствииоснованияи палладиевогокатализатора, которыйсостоитизпалладияи бидентатногофосфорноголигандаформулы IIIпричем Ar означаетфенил, которыйможетсодержатьотодногодотрехзаместителей, выбранныхизметила, метокси, фтораи хлора, и Rи R, каждыйнезависимо, означают C-C-алкилилиС-C-циклоалкилили Rи Rвместеобразуют 2-7-членныймостик, возможнозамещенныйодним C-C-алкильнымзаместителем, врастворителеподвергаютвзаимодействиюс фенилбороновойкислотой IVaдифенилбориновойкислотой IVbилисмесьюиз IVa и IVb, где Rи n имеютуказанныевышезначения.
Abstract:
The invention relates to a method for producing substituted biphenyls of formula (I), wherein R1 = nitro or amino, R2 = cyano, halide, C1-C4 alkyl halide, C1-C4 alkoxy halide or C1-C4 alkylthio halide, n = 0 to 3 and R3 = hydrogen, cyano or halide, characterized by reacting a halobenzene of formula (Il), wherein HaI represents chlorine or bromine, with a phenyl boronic acid (IVa) of a diphenyl borinic acid (IVb) or a mixture of (IVa) and (IVb) in a solvent or diluent in the presence of a base and of a palladium catalyst which consists of palladium and a bidentate phosphorus ligand of formula (III), wherein Ar represents optionally substituted phenyl and R4 and R5 represent C1-C8 alkyl or C3-C6 cycloalkyl each or together form a two- to seven-membered bridge which can optionally carry a C1-C6 alkyl substituent.