Basf Aktiengesellschaft

Georg Schuh

Alfred Oftring

Dieter Hertel

Jochen Wild

Birgit Potthoff-Karl

Thomas Greindl

Gerold Braun

Gerhard Wolf

Helmut Wolf

Beate Ehle

Hans-Heinrich Bechtolsheimer

Beate Strecker

Martin Aus Kahmen

Rudolf Alt

Continuous preparation of N-acylamino carboxylic acids and N-acylamino

Preparation of N-acylamino carboxylic acids and N-acylamino sulfonic

Glycine-N,N-diacetic acid derivatives I ##STR1## where R is unsubstituted or substituted alkyl, alkenyl, alkoxylate groups, phenylalkyl, phenyl, a heterocyclic ring or a radical of the formula ##STR2## where A is an alkylene bridge or a chemical bond, and M is hydrogen, alkali metal, alkaline earth metal, ammonium or substituted ammonium in the appropriate stoichiometric amounts, are prepared by reacting

Preparation of glycine-N,N-diacetic acid derivatives

Glycine-N, N-diacetic acid derivatives are prepared by reacting corresponding 2-substituted glycines, 2-substituted glycinonitriles, doubled glycines, or precursors of the glycine derivatives with formaldehyde and alkali metal cyanide. The reaction is conducted in an aqueous medium at a pH of 8 to 14. From 0, 5 to 30% of the amount of alkali metal cyanide required for the reaction are added to the glycine derivatives or precursors thereof Subsequently, the remaining amount of alkali metal cyanide and the formaldehyde are simultaneously metered in over a period of from 0.5 to 12 hours.

Process for the preparation of glycine-N, N-diacetic acid derivatives

Preparation of alkyl glycosides

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Ludwigshafen, Germany

Georg Schuh