PROCESS FOR THE PREPARATION OF N,N'-BIS(2-HYDROXYBENZYL)ETHYLENEDIAMINE-N,N'-DIACETIC ACID AND ITS DERIVATIVES

The invention relates to a process for the preparation of N,N′-bis(2-hydroxybenzyl)-ethylenediamine-N,N′-diacetic acid and its derivatives of general formula (I), wherein both R have the same meaning and are selected from H, C1-C4alkyl, CH2OH, SO3M, and COOM; and all M have the same meaning and repr...

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Bibliographic Details
Main Authors NAWROCKI ADAM, STEFANIAK FILIP, MROZEK-NIECKO ANIKA, OLSZEWSKI RADOSLAW
Format Patent
LanguageEnglish
Published 01.07.2010
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a process for the preparation of N,N′-bis(2-hydroxybenzyl)-ethylenediamine-N,N′-diacetic acid and its derivatives of general formula (I), wherein both R have the same meaning and are selected from H, C1-C4alkyl, CH2OH, SO3M, and COOM; and all M have the same meaning and represent hydrogen atom, Na, K or NH4; which comprises reductive amination of glyoxylic acid with a salan compound of general formula (II), in the presence of an amine proton acceptor. The compounds of formula (I) can be used as chelating agents for micronutrients in fertilizer preparations for plants.
Bibliography:Application Number: US20080671316