Control of organopalladium glycal adduct decomposition reactions. Role of conformational restriction and .beta.-carbon substituents

1986 ◽  
Vol 5 (8) ◽  
pp. 1753-1755 ◽  
Author(s):  
Jane Chi Ya. Cheng ◽  
G. Doyle. Daves
Keyword(s):  
Conformational Restriction ◽  
Decomposition Reactions

The Role of the Solvent in Radical Decomposition Reactions: p-Nitrophenylazotris-(p-anisyl)-methane

1954 ◽  
Vol 76 (16) ◽  
pp. 4169-4171 ◽  
Author(s):  
Mendel D. Cohen ◽  
John E. Leffler ◽  
Libero M. Barbato
Keyword(s):  
Decomposition Reactions ◽  
Radical Decomposition

THE KINETICS OF THE DECOMPOSITION REACTIONS OF THE LOWER PARAFFINS: IV. THE ROLE OF FREE RADICALS IN THE DECOMPOSITION OF n-BUTANE

1939 ◽  
Vol 17b (3) ◽  
pp. 105-120 ◽  
Author(s):  
E. W. R. Steacie ◽  
H. O. Folkins
Keyword(s):  
Nitric Oxide ◽  
Ethylene Oxide ◽  
Complete Suppression ◽  
Radical Chain ◽  
Decomposition Reactions ◽  
Maximum Inhibition ◽  
A Chain ◽  
Kinetics Of ◽  
Oxide Inhibition

An investigation has been made of the inhibition of free radical chain processes in the decomposition of n-butane by the addition of nitric oxide. The method was to initiate chains in butane at low temperatures by means of ethylene oxide, and then to investigate the efficiency of nitric oxide in suppressing these chains.It was found that nitric oxide is not completely efficient as a chain breaker, inasmuch as sensitization by ethylene oxide persisted in the presence of large amounts of nitric oxide. It is therefore concluded that maximum inhibition of organic decomposition reactions by nitric oxide does not in all cases correspond to complete suppression of chains, and hence the real chain length in such reactions may be greater than that inferred from the results of the nitric oxide inhibition method.

Chemiluminescence from peroxide decomposition reactions. Role of energy transfer

1970 ◽  
Vol 92 (5) ◽  
pp. 1128-1136 ◽  
Author(s):  
Seth R. Abbott ◽  
Stanley. Ness ◽  
David M. Hercules
Keyword(s):  
Energy Transfer ◽  
Decomposition Reactions ◽  
Peroxide Decomposition

scholarly journals Exploration of the Activation Mechanism of the Epigenetic Regulator MLL3: A QM/MM Study

Biomolecules ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1051
Author(s):  
Sebastián Miranda-Rojas ◽  
Kevin Blanco-Esperguez ◽  
Iñaki Tuñón ◽  
Johannes Kästner ◽  
Fernando Mendizábal
Keyword(s):  
Transfer Reaction ◽  
Activation Mechanism ◽  
Epigenetic Mark ◽  
Regulation Mechanism ◽  
Salt Bridges ◽  
Conformational Restriction ◽  
Histone 3 ◽  
Methyl Transfer ◽  
Epigenetic Regulator

The mixed lineage leukemia 3 or MLL3 is the enzyme in charge of the writing of an epigenetic mark through the methylation of lysine 4 from the N-terminal domain of histone 3 and its deregulation has been related to several cancer lines. An interesting feature of this enzyme comes from its regulation mechanism, which involves its binding to an activating dimer before it can be catalytically functional. Once the trimer is formed, the reaction mechanism proceeds through the deprotonation of the lysine followed by the methyl-transfer reaction. Here we present a detailed exploration of the activation mechanism through a QM/MM approach focusing on both steps of the reaction, aiming to provide new insights into the deprotonation process and the role of the catalytic machinery in the methyl-transfer reaction. Our finding suggests that the source of the activation mechanism comes from conformational restriction mediated by the formation of a network of salt-bridges between MLL3 and one of the activating subunits, which restricts and stabilizes the positioning of several residues relevant for the catalysis. New insights into the deprotonation mechanism of lysine are provided, identifying a valine residue as crucial in the positioning of the water molecule in charge of the process. Finally, a tyrosine residue was found to assist the methyl transfer from SAM to the target lysine.

Central Role of Phenanthroline Mono-N-oxide in the Decomposition Reactions of Tris(1,10-phenanthroline)iron(II) and -iron(III) Complexes

2010 ◽  
Vol 49 (9) ◽  
pp. 3968-3970 ◽  
Author(s):  
Gábor Bellér ◽  
Gábor Lente ◽  
István Fábián
Keyword(s):  
Decomposition Reactions

scholarly journals The role of decomposition reactions in assessing first-principles predictions of solid stability

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Christopher J. Bartel ◽  
Alan W. Weimer ◽  
Stephan Lany ◽  
Charles B. Musgrave ◽  
Aaron M. Holder
Keyword(s):  
First Principles ◽  
Decomposition Reactions

The crucial role of cadmium acetate-induced conformational restriction in microscopic structure and stability of polystyrene-block-polyvinyl pyridine thin films

Polymer ◽  
2014 ◽  
Vol 55 (22) ◽  
pp. 5801-5810 ◽  
Author(s):  
Feifei Xue ◽  
Hongfei Li ◽  
Jichun You ◽  
Conghua Lu ◽  
Günter Reiter ◽  
...  
Keyword(s):  
Thin Films ◽  
Crucial Role ◽  
Cadmium Acetate ◽  
Microscopic Structure ◽  
Conformational Restriction ◽  
Structure And Stability ◽  
Polyvinyl Pyridine

scholarly journals Reductive Defluorination and Mechanochemical Decomposition of Per- and Polyfluoroalkyl Substances (PFASs): From Present Knowledge to Future Remediation Concepts

2020 ◽  
Vol 17 (19) ◽  
pp. 7242
Author(s):  
Philipp Roesch ◽  
Christian Vogel ◽  
Franz-Georg Simon
Keyword(s):  
Cost Effective ◽  
Future Research ◽  
Research Directions ◽  
Decomposition Reactions ◽  
Sustainable Technologies ◽  
The Past ◽  
Remediation Strategies ◽  
Future Research Directions ◽  
Polyfluoroalkyl Substances

Over the past two decades, per- and polyfluoroalkyl substances (PFASs) have emerged as worldwide environmental contaminants, calling out for sophisticated treatment, decomposition and remediation strategies. In order to mineralize PFAS pollutants, the incineration of contaminated material is a state-of-the-art process, but more cost-effective and sustainable technologies are inevitable for the future. Within this review, various methods for the reductive defluorination of PFASs were inspected. In addition to this, the role of mechanochemistry is highlighted with regard to its major potential in reductive defluorination reactions and degradation of pollutants. In order to get a comprehensive understanding of the involved reactions, their mechanistic pathways are pointed out. Comparisons between existing PFAS decomposition reactions and reductive approaches are discussed in detail, regarding their applicability in possible remediation processes. This article provides a solid overview of the most recent research methods and offers guidelines for future research directions.

The Role of the Solvent in Radical Decomposition Reactions: Phenylazotriphenylmethane

1954 ◽  
Vol 76 (5) ◽  
pp. 1425-1427 ◽  
Author(s):  
Marilyn G. Alder ◽  
John E. Leffler
Keyword(s):  
Decomposition Reactions ◽  
Radical Decomposition

Thermal decomposition reactions of oxalatoamminecobalt(III) complexes the role of the triplet state

1967 ◽  
Vol 3 (5) ◽  
pp. 169-171 ◽  
Author(s):  
Nobuyuki Tanaka ◽  
Kenzo Nagase ◽  
Saburo Nagakura
Keyword(s):  
Thermal Decomposition ◽  
Triplet State ◽  
Decomposition Reactions
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