The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform
Chaojun Li - One of the best experts on this subject based on the ideXlab platform.
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cu catalyzed cross dehydrogenative coupling a versatile strategy for c c bond formations via the Oxidative Activation of sp3 c h bonds
Proceedings of the National Academy of Sciences of the United States of America, 2006Co-Authors: Zhiping Li, Scott D Bohle, Chaojun LiAbstract:Cu-catalyzed cross-dehydrogenative coupling (CDC) methodologies were developed based on the Oxidative Activation of sp3 C–H bonds adjacent to a nitrogen atom. Various sp, sp2, and sp3 C–H bonds of pronucleophiles were used in the Cu-catalyzed CDC reactions. Based on these results, the mechanisms of the CDC reactions also are discussed.
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Cu-catalyzed cross-dehydrogenative coupling: A versatile strategy for C–C bond formations via the Oxidative Activation of sp3 C–H bonds
Proceedings of the National Academy of Sciences of the United States of America, 2006Co-Authors: Zhiping Li, D. Scott Bohle, Chaojun LiAbstract:Cu-catalyzed cross-dehydrogenative coupling (CDC) methodologies were developed based on the Oxidative Activation of sp3 C–H bonds adjacent to a nitrogen atom. Various sp, sp2, and sp3 C–H bonds of pronucleophiles were used in the Cu-catalyzed CDC reactions. Based on these results, the mechanisms of the CDC reactions also are discussed.
Zhiping Li - One of the best experts on this subject based on the ideXlab platform.
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cu catalyzed cross dehydrogenative coupling a versatile strategy for c c bond formations via the Oxidative Activation of sp3 c h bonds
Proceedings of the National Academy of Sciences of the United States of America, 2006Co-Authors: Zhiping Li, Scott D Bohle, Chaojun LiAbstract:Cu-catalyzed cross-dehydrogenative coupling (CDC) methodologies were developed based on the Oxidative Activation of sp3 C–H bonds adjacent to a nitrogen atom. Various sp, sp2, and sp3 C–H bonds of pronucleophiles were used in the Cu-catalyzed CDC reactions. Based on these results, the mechanisms of the CDC reactions also are discussed.
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Cu-catalyzed cross-dehydrogenative coupling: A versatile strategy for C–C bond formations via the Oxidative Activation of sp3 C–H bonds
Proceedings of the National Academy of Sciences of the United States of America, 2006Co-Authors: Zhiping Li, D. Scott Bohle, Chaojun LiAbstract:Cu-catalyzed cross-dehydrogenative coupling (CDC) methodologies were developed based on the Oxidative Activation of sp3 C–H bonds adjacent to a nitrogen atom. Various sp, sp2, and sp3 C–H bonds of pronucleophiles were used in the Cu-catalyzed CDC reactions. Based on these results, the mechanisms of the CDC reactions also are discussed.
Claus Jacob - One of the best experts on this subject based on the ideXlab platform.
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Oxidative Activation of antioxidant defence
Trends in Biochemical Sciences, 2005Co-Authors: Paul G. Winyard, Christopher J Moody, Claus JacobAbstract:Living cells maintain a delicate balance between oxidizing and reducing species, and many disorders such as rheumatoid arthritis and Alzheimer's disease have been associated with a disturbed intracellular ‘redox equilibrium'. The past few years have witnessed accelerated research into how natural redox responses and antioxidant defence systems are activated and how they restore a healthy redox balance. To function properly, many of these processes rely on a powerful sulfur redox chemistry, which is best exemplified by the complex, newly emerging cysteine-based redox regulation of the glutathione and thioredoxin pathways. Other redox systems based on Oxidatively activated amino acid side chains in proteins are also becoming increasingly important, but are still barely understood or explored.
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Oxidative Activation of antioxidant defence
Trends in Biochemical Sciences, 2005Co-Authors: Paul G. Winyard, Christopher J Moody, Claus JacobAbstract:Living cells maintain a delicate balance between oxidizing and reducing species, and many disorders such as rheumatoid arthritis and Alzheimer's disease have been associated with a disturbed intracellular 'redox equilibrium'. The past few years have witnessed accelerated research into how natural redox responses and antioxidant defence systems are activated and how they restore a healthy redox balance. To function properly, many of these processes rely on a powerful sulfur redox chemistry, which is best exemplified by the complex, newly emerging cysteine-based redox regulation of the glutathione and thioredoxin pathways. Other redox systems based on Oxidatively activated amino acid side chains in proteins are also becoming increasingly important, but are still barely understood or explored. © 2005 Elsevier Ltd. All rights reserved.
Enrico Tronconi - One of the best experts on this subject based on the ideXlab platform.
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The Low Temperature Interaction of NO + O_2 with a Commercial Cu-CHA Catalyst: A Chemical Trapping Study
Topics in Catalysis, 2016Co-Authors: Tommaso Selleri, Maria Pia Ruggeri, Isabella Nova, Enrico TronconiAbstract:We investigate the interaction of NO + O_2 with a Cu-CHA SCR catalyst in the low temperature region. To this purpose, a well validated experimental protocol, including a combination of transient response methods, ex situ FTIR spectroscopy and chemical trapping techniques, is applied. In particular, the combination of a Cu-CHA catalyst powder and a BaO/Al_2O_3 NOx trap in a physical mixture is used in an attempt to capture and stabilize reactive and possibly elusive NOx intermediates, which might go otherwise undetected. As a result, direct evidence for the formation of nitrites in the Oxidative Activation of NO over Cu-CHA is obtained. Identification of trapped nitrites intermediates has been confirmed in several ways, including: (i) their thermal decomposition to an equimolar mix of NO and NO_2 during temperature programmed desorption, (ii) N_2 formation during their reaction with NH_3 at low temperature, (iii) ex situ IR analysis of the BaO/Al_2O_3 phase after discharge and separation from the mechanical mixture. On such a basis, a low temperature redox mechanism for NO oxidation and Standard SCR reaction over Cu-zeolite catalysts is proposed and discussed.
Paul G. Winyard - One of the best experts on this subject based on the ideXlab platform.
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Oxidative Activation of antioxidant defence
Trends in Biochemical Sciences, 2005Co-Authors: Paul G. Winyard, Christopher J Moody, Claus JacobAbstract:Living cells maintain a delicate balance between oxidizing and reducing species, and many disorders such as rheumatoid arthritis and Alzheimer's disease have been associated with a disturbed intracellular ‘redox equilibrium'. The past few years have witnessed accelerated research into how natural redox responses and antioxidant defence systems are activated and how they restore a healthy redox balance. To function properly, many of these processes rely on a powerful sulfur redox chemistry, which is best exemplified by the complex, newly emerging cysteine-based redox regulation of the glutathione and thioredoxin pathways. Other redox systems based on Oxidatively activated amino acid side chains in proteins are also becoming increasingly important, but are still barely understood or explored.
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Oxidative Activation of antioxidant defence
Trends in Biochemical Sciences, 2005Co-Authors: Paul G. Winyard, Christopher J Moody, Claus JacobAbstract:Living cells maintain a delicate balance between oxidizing and reducing species, and many disorders such as rheumatoid arthritis and Alzheimer's disease have been associated with a disturbed intracellular 'redox equilibrium'. The past few years have witnessed accelerated research into how natural redox responses and antioxidant defence systems are activated and how they restore a healthy redox balance. To function properly, many of these processes rely on a powerful sulfur redox chemistry, which is best exemplified by the complex, newly emerging cysteine-based redox regulation of the glutathione and thioredoxin pathways. Other redox systems based on Oxidatively activated amino acid side chains in proteins are also becoming increasingly important, but are still barely understood or explored. © 2005 Elsevier Ltd. All rights reserved.
