Preparing 1,4-trans-substituted cyclohexane compound, comprises reacting corresponding 1,4-cis-cyclohexane compound of 1,4-trans-substituted cyclohexane compound in the presence of strong acid and additional carbocations forming compound

Preparing 1,4-trans-substituted cyclohexane compound, comprises reacting corresponding 1,4-cis-cyclohexane compound of 1,4-trans-substituted cyclohexane compound in the presence of strong acid and additional carbocations forming compound

Preparing 1,4-trans-substituted cyclohexane compound (I), comprises reacting corresponding 1,4-cis-cyclohexane compound of (I) in the presence of a strong acid and an additional carbocation forming compound. Preparing 1,4-trans-substituted cyclohexane compound of formula (I), comprises reacting (I)...

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Hauptverfasser: MAILLARD, DAVID, WAECHTLER, ANDREAS, KRATTIGER, PHILIPP, KRIEGBAUM, MARKUS, SCHAEFER, RALF
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator MAILLARD, DAVID
WAECHTLER, ANDREAS
KRATTIGER, PHILIPP
KRIEGBAUM, MARKUS
SCHAEFER, RALF
description Preparing 1,4-trans-substituted cyclohexane compound (I), comprises reacting corresponding 1,4-cis-cyclohexane compound of (I) in the presence of a strong acid and an additional carbocation forming compound. Preparing 1,4-trans-substituted cyclohexane compound of formula (I), comprises reacting (I) corresponding 1,4-cis-cyclohexane compound in the presence of a strong acid and an additional carbocation forming compound. R1 : unsubstituted, linear up to 9C alkyl or -CH(CH 3)CH 3; R2 : H, halo, up to 9C alkyl, up to 9C perfluoroalkyl or up to 9C perfluoroalkoxy; s : 0-2; m : 1 or 2; n : 0-2; p : 1-4; q : 0-4; A1 : trans-1,4-cyclohexylene; Z1 : -(CH 2) t; and t : 0-4. [Image]. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von trans-1,4-disubstituierten Cyclohexanverbindungen mit mindestens einem von Benzol abgeleiteten Rest in 1- oder 4-Stellung, das einen Isomerisierungsschritt umfasst, der einen oder mehrere cis-konfigurierte Cyclohenxanringe unter Verwendung einer starken Säure und in Gegenwart einer zusätzlichen Carbokationen bildenden Verbindung in die trans-Konfiguration überführt.
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CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Preparing 1,4-trans-substituted cyclohexane compound, comprises reacting corresponding 1,4-cis-cyclohexane compound of 1,4-trans-substituted cyclohexane compound in the presence of strong acid and additional carbocations forming compound
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