Solution studies of tris(2-benzylaminoethyl)amine complexes of zinc(II) and copper(II): The catalytic hydrolysis of toxic organophosphate
作者:Gaber A.M. Mersal、Mohamed M. Ibrahim
DOI:10.1016/j.crci.2011.10.012
日期:2012.4
Résumé Solution studies of the tetradentate ligand tris(2-benzylaminoethyl)amine, BzTren with both zinc(II) and copper(II) salts were investigated in aqueous methanol (33% v/v) by means of 1H NMR, potentiometric, and UV-visible titrations as well as cyclic voltammetry. Subsequently, their zinc(II) and copper(II) complexes [BzTren-M(OH2)]2+ 1 and 2 (M2+ = Zn2+ and Cu2+) were synthesized and fully characterized by using FT-IR spectroscopy, elemental analysis, and thermal analysis. Complexes 1 and 2 are investigated kinetically for the catalytic hydrolysis of the toxic organophosphate parathion at 50 °C in aqueous methanol (33%, v/v). The kinetic results indicate that copper(II) complex 2 is more active than zinc(II) complex 1, presumably a reflection of the effective electron-withdrawing as well as the greatest electrophilicity of copper(II) ion. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.doc
Stereoelectronic effects in the hydrolysis of bicyclic and acyclic phosphates and phosphorothionates
作者:Tahsin. Fanni、Kazunari. Taira、David G. Gorenstein、Ramamoorthy. Vaidyanathaswamy、John G. Verkade
DOI:10.1021/ja00280a031
日期:1986.10
Mise en evidence d'une augmentation de la vitesse pour les phosphate et thiophosphate bicycliques trioxa-2,6,7 phospha-1 bicyclo [2.2.2] octanes oxo-1 (ou thioxo-1) methyl-4 substitues compares a leurs analogues acycliques, les phosphate et thiophosphate de triethyle
Mise en evidence d'une Augmentation de la vitesse pour les phosphate et thiophosphate bicycliques trioxa-2,6,7 phospha-1 bicycl [2.2.2] 辛烷 oxo-1 (ou thioxo-1)methyl-4 取代物比较了 leurs 类似物acycliques, les phosphate and thiophosphate de triethyle
Novel glucagon antagonists/inverse agonists
申请人:Lau Jesper
公开号:US20050256175A1
公开(公告)日:2005-11-17
Novel compounds that act to antagonize the action of the glucagon peptide hormone on the glucagon receptor. More particularly, it relates to glucagon antagonists or inverse agonists.
Novel compounds that act to antagonize the action of the glucagon peptide hormone on the glucagon receptor. More particularly, it relates to glucagon antagonists or inverse agonists.
作者:A. E. Shipov、G. K. Genkina、O. Yu. Eremina、E. I. Bakanova、A. V. Khrunin、S. A. Roslavtseva、T. A. Mastryukova
DOI:10.1023/a:1009501924061
日期:——
A series of S-[N-acyl-N-(alkoxycarbonylalkyl)aminomethyl] O,O-dialkyl phosphorothioates and -dithioates were prepared by the reactions of the corresponding alkali salts of dialkyl phosphorothioates or dialkyl phosphorodithioates with esters of N-acyl-N-(chloromethyl)glycine or N-acyl-N-(chloromethyl)-beta -alanine and by the reactions of dialkylphosphorothioic or dialkylphosphorodithioic acids with N-acylated amino acids or their esters and paraformaldehyde in the presence of gaseous HCl Some of the resulting compounds proved to be active permethrine synergists.