Verfahren zur Herstellung von beta-(4-Hydroxy-3,5-di-tert.-butylphenyl)-propions{urealkylestern

Verfahren zur Herstellung von beta-(4-Hydroxy-3,5-di-tert.-butylphenyl)-propions{urealkylestern

The process for the obtention of alkyl ethers of alpha -(4-oxy-3,5-di-tert. butylphenyl)-propionic acid provides for interacting 2,6-di-tert. butylphenol with alkylacrylate, whcih are taken in an amount of 1 : 1-1.3 mole parts, respectively, at a temperature of 70 - 150C in the presence of a catalys...

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Hauptverfasser: EGIDIS, FELIKS, MICHAILOVIC, RUBINSTEIN, BORIS, IOSIFOVIC, POPOV, LEONID, KONSTANTINOVIC, ERSOV, VLADIMIR, VLADIMIROVIC, VOLODKIN, ALEKSANDR, ALEKSANDROVIC, GORBUNOV, BORIS, NIKOLAEVIC, PARAMONOV, VLADIMIR, IVANOVIC, PANKOVA, TALSIA, VASILIEVNA
Format: Patent
Sprache:ger
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Zusammenfassung:The process for the obtention of alkyl ethers of alpha -(4-oxy-3,5-di-tert. butylphenyl)-propionic acid provides for interacting 2,6-di-tert. butylphenol with alkylacrylate, whcih are taken in an amount of 1 : 1-1.3 mole parts, respectively, at a temperature of 70 - 150C in the presence of a catalyst. The catalyst consists of hydrated alkali metal oxide, 4-R-2,6-di-tert. butylphenolate of alkali metal and 4-R-2,6-di-tert. butylphenol, wherein R = H, CH3, C(CH )3, at the following ratio in parts by weights: hydrated alkali metal oxide: 0.05 - 20; 4-R-2,6-di-tert. butylphenolate of alkali metal: 2.05 - 99.94; 4-R-2,6-di-tert. butylphenol: the remainder. Said catalyst is utilized in an amount of 2 - 20 mole % in relation to an amount of 2,6-di-tert. butylphenol as calculated from the sum of amounts of hydrated alkali metal oxide and 4-R-2,6-di-tert. butylphenolate of alkali metal.