Bayer Aktiengesellschaft

Bernd-Ulrich Schenke

Pieter Ooms

Ursula Jansen

Hans-Josef Buysch

Erhard-Gunther Hoffmann

Reinhard Thiel

Heinz-Jurgen Alpers

Karl-Heinz Dietz

Disclosed herein is a process for the preparation of carboxylic acid benzyl esters from dibenzyl ethers, comprising reacting dibenzyl ethers with carboxylic acids in the presence of a homogeneous acidic catalyst.

Method for producing carboxylic acid benzyl esters

The invention relates to the preparation of hydroxybenzoic benzyl esters by reacting benzyl chloride with hydroxybenzoic acids in the presence of one or more amides.

Process for the preparation of hydroxybenzoic benzyl esters

The invention relates to a process for the preparation of hydroxybenzoic benzyl esters by reacting dibenzyl ethers with alkylcarbonyloxybenzoic or alkoxycarbonyloxybenzoic acids and optionally anhydrides thereof in the presence of one or more acids as catalyst.

The invention relates to a process for forming a carboxylic benzyl ester comprising reacting a dibenzyl ether with a carboxylic acid in the presence of a heteropolyacid and forming a carboxylic acid benzyl ester.

Process for the preparation of carboxylic acid benzyl esters

The invention relates to a process for the preparation of benzyl alcohol by hydrolysis of benzyl chloride with water at elevated temperatures, which avoids any wastewater pollution.

Process for the continuous preparation of benzyl alcohol

A novel process for the preparation of benzyl alcohol by the hydrolysis of benzyl chloride, which operates with from 10 to 70 times the molar quantity of water at temperatures of from 80.degree. to 180.degree. C. and stops the reaction before complete conversion is reached, avoids both the addition of bases and water-soluble organic solvents and also the formation of sodium chloride.

Process for the preparation of benzyl alcohol

A process for the separation of a mixture which contains benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid, wherein said mixture is continuously introduced via a side-feed into a distillation column from which aqueous hydrochloric acid and benzyl chloride are continuously taken off as overhead product, benzyl alcohol and dibenzyl ether are continuously taken off as bottom product, thereby the formation of dibenzyl ether is reduced or virtually prevented.

Process for the separation of a mixture of benzyl chloride, benzyl

In a process for the preparation of aqueous formaldehyde solutions consisting of the following steps:

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Bottrop, Germany

Bernd-Ulrich Schenke