Results 211 to 220 of about 1,432,567 (263)
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Prenyltransferase: the mechanism of the reaction
Biochemistry, 1976The enzyme, prenyltransferase, which normally catalyzes the addition of an allylic pyrophosphate to isopentenyl pyrophosphate, has been found to catalyze the hydrolysis of its allylic substrate. The rate of this hydrolysis is markedly stimulated by inorganic pyrophosphate.
C D, Poulter, H C, Rilling
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Reaction mechanisms: polar reactions
Annual Reports Section "B" (Organic Chemistry), 2012Highlights of mechanistic work pertaining to polar reactions published in 2012 are provided in this report. Such reactions cover a wide range of biologically, chemically and industrially-relevant processes, and although they have been broadly classified here, a number could span one or more general categories.
Hon Man Yau, Anna K. Croft
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Reaction mechanisms: pericyclic reactions
Annual Reports Section "B" (Organic Chemistry), 2011This report surveys the 2010 literature on mechanisms of pericyclic reactions. Among the newer concepts highlighted in this year's studies are the distortion-interaction model of reactivity, the importance of CH-π interactions in controlling selectivity, and the catalysis of pericyclic reactions by transition metals and organocatalysts.
Dean J. Tantillo, Jeehiun K. Lee
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Reaction mechanisms: pericyclic reactions
Annual Reports Section "B" (Organic Chemistry), 2012This review summarizes a number of articles published in 2011 describing mechanisms of pericyclic reactions. The types of reactions studied were of the cycloaddition sort (e.g., [2+1], [2+2], [3+2], [4+2], etc.), as well as sigmatropic (e.g., [1,2], [1,3], [3,3] shifts, etc.), group transfer (e.g., ene), and electrocyclic types.
Edyta M. Greer, Christopher V. Cosgriff
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Mechanism of Oligomerization Reactions of Silica
The Journal of Physical Chemistry B, 2006The mechanism of the oligomerization reaction of silica, the initial step of silica formation, has been studied by quantum chemical techniques. The solvent effect is included by using the COSMO model. The formation of various oligomers (from dimer to tetramer) was investigated.
Trinh, T.T. +2 more
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On the mechanism of the Dakin–West reaction
Organic & Biomolecular Chemistry, 2012The mechanism of the Dakin-West reaction has been thoroughly investigated by monitoring the reaction using ESI-MS/MS techniques in combination with M06-2X/6-311++G(d,p) calculations. Several of the key intermediates in the previously proposed "azlactone" mechanism have been experimentally detected and characterized.
Dalla-Vechia, Luciana +7 more
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The reaction mechanism of catalase
Experientia, 1962Es werden polarographische Befunde mitgeteilt, welche den von Westheimer vorgeschlagenen Mechanismus der Zersetzung von Wasserstoffperoxyd durch Katalase erganzen.
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Mechanism of Delayed Reactions
Science, 1967Arsanilic acid conjugates of polymers of L-typrosine, glutamic acid, and alanine are immunogenic and can elicit hapten-specific, delayed-hypersensitivity reactions in sensitized guinea pigs. Conjugates of the D-amino acid polymers are neither immunogenic nor capable of eliciting delayed reactions.
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2022
This chapter reviews the study of reaction rates that leads to an understanding of the mechanisms of reactions and the analysis into a sequence of elementary steps. It demonstrates how to construct rate laws from a proposed mechanism. It also outlines the elementary steps for simple rate laws that can be combined into an overall rate law: invoking the ...
Peter Atkins +2 more
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This chapter reviews the study of reaction rates that leads to an understanding of the mechanisms of reactions and the analysis into a sequence of elementary steps. It demonstrates how to construct rate laws from a proposed mechanism. It also outlines the elementary steps for simple rate laws that can be combined into an overall rate law: invoking the ...
Peter Atkins +2 more
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MECHANISMS OF REACTIONS OF OXIDIZERS
1967Abstract : Progress during the year in the investigations of the mechanism of decomposition of oxidizers such as ammonium nitrate and ammonium perchlorate is summarized. Areas of investigation include the study of the electrical conductivity of single crystals of ammonium perchlorate, measurement of mobility ratios, ion exchange constants and ...
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