2024-03-29T14:56:27Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/996912020-06-02T08:52:08Zcom_10261_75com_10261_6col_10261_328
00925njm 22002777a 4500
dc
Cremonini, Mauro Andrea
author
Álvarez-Fernández, Ana
author
Lucena, Juan J.
author
Rombolà, Adamo Domenico
author
Marangoni, Bruno
author
Placucci, Giuseppe
author
2001-07-20
The exceptional efficiency of the iron chelate of ethylenediaminedi(o-hydroxyphenyl)acetic acid (o,o-EDDHA) in correcting iron chlorosis in plants and the medical applications of various metallic chelates of this compound have long been recognized. As commercial preparations of o,o-ADHA usually contain impurities, a method for their detection is proposed. By using one- and two-dimensional nuclear magnetic resonance two impurities were identified. The structure of one of these compounds was assigned to an isomer of EDDHA containing at least one p-hydroxyphenyl moiety. The structure of the other impurity was tentatively assigned to a byproduct the EDDHA synthesis: 2,6-di[CH(COOH)NHCH2CH2NHCH(COOH)Ar]phenol (Ar = hydroxyphenyl). Both compounds were also detected in the ADHA extracted from a commercial iron fertilizer.
Journal of Agricultural and Food Chemistry 49 (8): 3527-3532 (2001)
http://hdl.handle.net/10261/99691
10.1021/jf010073h
Fertilizers
NMR
EDDHA
Iron chelates
NMR analysis of the iron ligand ethylenediaminedi(o-hydroxyphenyl)acetic acid (EDDHA) employed in fertilizers