Free-Radical-Mediated Multicomponent Reactions Involving Carbon Monoxide

2014 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Multicomponent Reactions

ChemInform Abstract: Free-Radical Carbonylation. Efficient Trapping of Carbon Monoxide by Carbon Radicals.

ChemInform ◽  
1990 ◽  
Vol 21 (19) ◽  
Author(s):  
I. RYU ◽  
K. KUSANO ◽  
A. OGAWA ◽  
N. KAMBE ◽  
N. SONODA
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Carbon Radicals

THE LUMINOUS MANTLE OF FUEL-RICH OXYACETYLENE FLAMES: II. FREE RADICAL AND CONTINUUM INTENSITIES, AND THEIR INFLUENCE ON C3 EMISSIONS

1957 ◽  
Vol 35 (11) ◽  
pp. 1275-1283 ◽  
Author(s):  
G. V. Marr
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Reaction Mechanisms ◽  
Experimental Error ◽  
Carbon Particle ◽  
Black Body ◽  
Reaction Scheme ◽  
Band Head ◽  
Ultraviolet Continuum ◽  
Background Continuum

The spectroscopic emissions from the luminous mantle of the oxyacetylene flame have been examined over a range of burning mixtures from 2.3 to 4.2 times stoichiometric. Plots of the band-head intensities for the radicals C2, C3, CH, and CN for different burning mixtures and for vertical traverses through the flame are reported. From a study of the variation of the background continuum from 3000 Å to 5200 Å with burning mixtures, the over-all continuum may be considered to consist of (a) a black-body carbon particle continuum having an energy distribution corresponding to a temperature of 2900 ± 200° K., (b) a continuum associated with the C3 radical emissions extending from 3500 Å to 4600 Å with a maximum at 4000 Å, and (c) an ultraviolet continuum extending from below 3000 Å to 5000 Å which appears similar to the carbon-monoxide flame continuum. Within the limits of experimental error the variation of the C3 bands and their associated continuum are identical. Possible reaction mechanisms for the production of the C3 emissions are considered and they probably may be accounted for by the reaction scheme[Formula: see text]

FREE RADICAL RECOMBINATION IN THE PHOTOLYSIS OF ACETONE

1955 ◽  
Vol 33 (5) ◽  
pp. 750-754 ◽  
Author(s):  
S. N. Naldrett
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Quantum Efficiency ◽  
Room Temperature ◽  
Methyl Groups ◽  
Carbon 14 ◽  
Radical Recombination

(CH3CO)2-1-C14 (I) was prepared by irradiating (CH3)2CO in the presence of CH3I-C14. Acetone was then irradiated at room temperature with light of 2537 Å in the presence of (I). Radioactivity was found in all products which contained methyl groups but not in any carbon monoxide product. The amount of carbon-14 ultimately found in acetone confirms that the quantum efficiency of the primary photolytic process is nearly unity and that extensive recombination of methyl and acetyl radicals to form acetone is responsible for the low over-all quantum efficiency of decomposition.

Molecular rearrangements. Part XVI. Thermolysis and photolysis of N-benzyldiphenylamine and N-phenylacetyldiphenylamine

1980 ◽  
Vol 58 (12) ◽  
pp. 1229-1232 ◽  
Author(s):  
M. Z. A. Badr ◽  
M. M. Aly ◽  
A. M. Fahmy
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Radical Mechanism ◽  
Molecular Rearrangements ◽  
Free Radical Mechanism

Heating N-phenylacetyldiphenylamine in a sealed tube at 360 °C gave rise to carbon monoxide, bibenzyl, toluene, stilbene, diphenylmethane, aniline, carbazole, N-benzylcarbazole, acridine, 9-phenylacridine, 4-aminotriphenylmethane, diphenylamine, p-benzyldiphenylamine, and o-aminodiphenylmethane. A similar result was also obtained on heating N-benzyldiphenylamine, with the exception of carbon monoxide. Such results in addition to those obtained from photolysis of N-phenylacetyldiphenylamine are interpreted in terms of a free-radical mechanism.

Carbon monoxide induces murine thymocytes apoptosis by a free radical-mediated mechanism

1996 ◽  
Vol 88 ◽  
pp. 76
Author(s):  
Mounir Dhouib ◽  
Victor Turcanu ◽  
Alain Lugnier ◽  
Philippe Poindron
Keyword(s):  
Carbon Monoxide ◽  
Free Radical

scholarly journals Mo(CO)5Py as an Initiator of Polymerization

1967 ◽  
Vol 22 (6) ◽  
pp. 580-586 ◽  
Author(s):  
C. H. Bamford ◽  
R. Denyer ◽  
G. C. Eastmond
Keyword(s):  
Carbon Monoxide ◽  
Free Radical ◽  
Methyl Methacrylate ◽  
Vinyl Monomer ◽  
Radical Formation ◽  
Organic Halide ◽  
Organic Halides ◽  
Free Radical Formation ◽  
Molybdenum Carbonyl ◽  
Kinetics Of

In a series of publications we have described the kinetics of free-radical formation from molybdenum carbonyl in association with organic halides in a number of electron-donating solvents. Radical formation involves the displacement of carbon monoxide from the carbonyl by the solvent or vinyl monomer in a rate-determining process giving rise to complexes of the type Mo (CO)5L (where L represents the solvent or monomer) which then react directly with the halide. This paper describes a study of the behaviour of Mo (CO)5Py in association with organic halides in methyl methacrylate solution. The results show that Mo (CO)5Py does not react directly with the halide but first undergoes activation by reaction with monomer, mainly with displacement of pyridine. The relative reactivities of complexes of the type Mo (CO)5L are discussed.The mechanism previously proposed to account for the inhibition processes observed in Mo (CO) 6-organic halide systems satisfactorily explains the extensive inhibition observed in the present work.

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