Oxidative C–C Bond Cleavage of α‐Keto Acids by Cobalt(II) Complexes of Nitrogen Donor Ligands
作者:Biswarup Chakraborty、Partha Halder、Priya Ranjan Banerjee、Tapan Kanti Paine
DOI:10.1002/ejic.201200663
日期:2012.12
their versatile reactivity with dioxygen. The X-ray crystal structure of 2 suggests a five-coordinate cobalt(II) center coordinated by a monodentate benzoylformate and a tetradentate nitrogen-donor supporting ligand. Conversely, complex 3 is a dinuclear cobaltcomplex where two cobalt(II) centers are bridged by PP. While complex 1 is unreactive towards dioxygen, 2 reacts slowly with oxygen to exhibit quantitative
Effects of Gln102Arg and Cys97Gly mutations on the structural specificity and stereospecificity of the L-lactate dehydrogenase from Bacillus stearothermophilus
作者:Helmut K. W. Kallwass、Marcel A. Luyten、Wendy Parris、Marvin Gold、Cyril M. Kay、J. Bryan Jones
DOI:10.1021/ja00038a016
日期:1992.6
The L-lactatedehydrogenase of Bacillusstearothermophilus (BSLDH) is a thermostable enzyme with considerable potential for applications in asymmetric synthesis. An understanding of the factors controlling its structural specificity and stereospecificity is therefore of interest. In this paper the effects of GIn 102→Arg and Cys97→Gly mutations have been evaluated. In a survey of thirteen 2-keto acids
Dioxygen activation and two consecutive oxidative decarboxylations of phenylpyruvate by nonheme iron(<scp>ii</scp>) complexes: functional models of hydroxymandelate synthase (HMS) and CloR
作者:Debobrata Sheet、Shrabanti Bhattacharya、Tapan Kanti Paine
DOI:10.1039/c5cc01652e
日期:——
Iron(ii)–phenylpyruvate complexes of facial tridentate ligands react with dioxygen to undergo two consecutive oxidative decarboxylations to form benzoic acid via mandelic acid.
铁(II)–苯基丙酮酸配合物与二氧分子反应,通过连续的两个氧化脱羧反应,经过扁桃酸形成苯甲酸。
Amide forming chemical ligation
申请人:Bode W. Jeffrey
公开号:US20070060773A1
公开(公告)日:2007-03-15
An amide is formed by reacting an α-ketoacid or salt thereof in a decarboxylative condensation reaction with an amine or salt thereof comprising a nitrogen covalently bound to an atom selected from oxygen, nitrogen, and sulfur. The amide bond is formed between the α-carbon of the ketoacid and the nitrogen of the amine. The α-ketoacid can be formed using a novel sulfur reagent.