Reactivity of Chalcones with 1-Hydroxymethyl Radicals

2006 ◽  
Vol 166 (6) ◽  
pp. 928-941 ◽  
Author(s):  
Redouane Mokrini ◽  
Patrick Trouillas ◽  
Mourad Kaouadji ◽  
Yves Champavier ◽  
Chantal Houée-Lévin ◽  
...  
Keyword(s):  
Hydroxymethyl Radicals

PRIMARY METHOXY RADICAL FORMATION IN THE REACTION OF METHANOL VAPOR WITH Hg 6(3P1) ATOMS

1961 ◽  
Vol 39 (6) ◽  
pp. 1231-1238 ◽  
Author(s):  
Arthur R. Knight ◽  
Harry E. Gunning
Keyword(s):  
Quantum Yield ◽  
Ethylene Glycol ◽  
Spectrometric Analysis ◽  
Methanol Vapor ◽  
Methyl Nitrite ◽  
Bond Scission ◽  
Hydroxymethyl Radicals ◽  
Primary Origin ◽  
Pure Methanol ◽  
Static Conditions

A study has been made of the decomposition of methanol vapor by Hg 6(3P1) atoms, under static conditions, at 25 °C. A system constructed entirely of quartz was employed to eliminate the dark reaction between methanol vapor and pyrex glass to form trimethyl borate. Emphasis in this investigation was placed on the determination of the nature of the primary processes operative, and to this end, the reaction was studied in some detail in the presence of nitric oxide.For pure methanol, the major primary products were found to be hydrogen and ethylene glycol. The primary quantum yield for hydrogen was 0.46. Minor products of primary origin were formaldehyde (0.01), ethane (0.005), and dimethyl ether (0.006), with the numbers in parentheses showing the primary quantum yields.In the presence of nitric oxide, the major products became methyl nitrite, nitrous oxide, and water. The quantum yield of methyl nitrite rose steadily with increasing NO concentrations. For a 1:1 CH3OH:NO mixture, the primary quantum yield for methyl nitrite was found to be 0.56. The behavior of the reaction in the presence of NO establishes fairly unequivocally that the major primary process involves O—H bond scission to form methoxy radicals and H atoms. These primary radicals then form hydroxymethyl radicals by abstraction reactions with the substrate. The ethylene glycol product arises by recombination of the secondary hydroxymethyl radicals. These conclusions were further substantiated by mass spectrometric analysis of the products of the decomposition of CD3OH. It was shown that CD3OD is a significant product of the reaction.

UV spectrum and kinetics of hydroxymethyl radicals

1988 ◽  
Vol 146 (5) ◽  
pp. 375-381 ◽  
Author(s):  
Palle Pagsberg ◽  
Jette Munk ◽  
Alfred Sillesen ◽  
Christopher Anastasi
Keyword(s):  
Uv Spectrum ◽  
Hydroxymethyl Radicals ◽  
Kinetics Of

Reaction of hydroxymethyl radicals with oxygen, nitric oxide, and nitrogen dioxide at room temperature

1989 ◽  
Vol 93 (13) ◽  
pp. 5162-5165 ◽  
Author(s):  
Palle Pagsberg ◽  
Jette Munk ◽  
Christopher Anastasi ◽  
Victoria J. Simpson
Keyword(s):  
Nitric Oxide ◽  
Nitrogen Dioxide ◽  
Room Temperature ◽  
Hydroxymethyl Radicals

Rate coefficient for the reaction of hydroxymethyl radicals with chlorine and infrared spectra of chloromethanol and dichloromethanol

1993 ◽  
Vol 97 (8) ◽  
pp. 1576-1582 ◽  
Author(s):  
Geoffrey S. Tyndall ◽  
Timothy J. Wallington ◽  
Michael D. Hurley ◽  
William F. Schneider
Keyword(s):  
Infrared Spectra ◽  
Rate Coefficient ◽  
Hydroxymethyl Radicals

scholarly journals EPR and ESEEM Studies on Silver Hydroxymethyl Radicals in Molecular Sieves.

1997 ◽  
Vol 51 ◽  
pp. 330-333 ◽  
Author(s):  
Jacek Michalik ◽  
Jarosław Sadło ◽  
Andre van der Pol ◽  
Eduard Reijerse ◽  
Kari Rissanen ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Hydroxymethyl Radicals
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