KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX

Amino acid esters (L) react with [Pd(DHP(H2O)2]²+ , (DHP = 1,3-diamino-2-hydroxopropane) giving mixed ligand [Pd(DHP)L]²+ The kinetics of hydrolysis of [Pd(DHP)L]²+ have been studied by pH-stat technique and rate constants were obtained. Rate acceleration observed for glycine methyl ester is high. T...

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Autores principales:	Al-QALAF,F.A, Al BASSAM,A.A, SHOUKRY,M.M
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	1,3-diamino-2-hydroxopropane Amino acid ester hydrolysis Pd(II) pH-stat technique
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200013
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spelling	oai:scielo:S0717-970720130002000132014-09-09KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEXAl-QALAF,F.AAl BASSAM,A.ASHOUKRY,M.M 1,3-diamino-2-hydroxopropane Amino acid ester hydrolysis Pd(II) pH-stat technique Amino acid esters (L) react with [Pd(DHP(H2O)2]²+ , (DHP = 1,3-diamino-2-hydroxopropane) giving mixed ligand [Pd(DHP)L]²+ The kinetics of hydrolysis of [Pd(DHP)L]²+ have been studied by pH-stat technique and rate constants were obtained. Rate acceleration observed for glycine methyl ester is high. The effect with methionine methyl ester and histidine methyl ester are much less marked, as the mixed-ligand complexes with these ligands do not involve alkoxycarbonyl donors. Possible mechanisms for these reactions are considered. Activation parameters have been determined for glycine methyl ester.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.2 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200013en10.4067/S0717-97072013000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	1,3-diamino-2-hydroxopropane Amino acid ester hydrolysis Pd(II) pH-stat technique
spellingShingle	1,3-diamino-2-hydroxopropane Amino acid ester hydrolysis Pd(II) pH-stat technique Al-QALAF,F.A Al BASSAM,A.A SHOUKRY,M.M KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
description	Amino acid esters (L) react with [Pd(DHP(H2O)2]²+ , (DHP = 1,3-diamino-2-hydroxopropane) giving mixed ligand [Pd(DHP)L]²+ The kinetics of hydrolysis of [Pd(DHP)L]²+ have been studied by pH-stat technique and rate constants were obtained. Rate acceleration observed for glycine methyl ester is high. The effect with methionine methyl ester and histidine methyl ester are much less marked, as the mixed-ligand complexes with these ligands do not involve alkoxycarbonyl donors. Possible mechanisms for these reactions are considered. Activation parameters have been determined for glycine methyl ester.
author	Al-QALAF,F.A Al BASSAM,A.A SHOUKRY,M.M
author_facet	Al-QALAF,F.A Al BASSAM,A.A SHOUKRY,M.M
author_sort	Al-QALAF,F.A
title	KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
title_short	KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
title_full	KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
title_fullStr	KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
title_full_unstemmed	KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX
title_sort	kinetics and mechanism of base hydrolysis of a-aminoacid esters catalysed by [pd(1,3- diamino-2-hydroxypropane)(h2o)2]2+ complex
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200013
work_keys_str_mv	AT alqalaffa kineticsandmechanismofbasehydrolysisofaaminoacidesterscatalysedbypd13diamino2hydroxypropaneh2o22complex AT albassamaa kineticsandmechanismofbasehydrolysisofaaminoacidesterscatalysedbypd13diamino2hydroxypropaneh2o22complex AT shoukrymm kineticsandmechanismofbasehydrolysisofaaminoacidesterscatalysedbypd13diamino2hydroxypropaneh2o22complex
_version_	1718445486644396032

KINETICS AND MECHANISM OF BASE HYDROLYSIS OF A-AMINOACID ESTERS CATALYSED BY [Pd(1,3- DIAMINO-2-HYDROXYPROPANE)(H2O)2]2+ COMPLEX

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