FREE RADICALS BY MASS SPECTROMETRY: XV. THE: MERCURY-PHOTOSENSITIZED DECOMPOSITION OF FORMIC ACID, ACETIC ACID, AND METHYL FORMATE

1959 ◽  
Vol 37 (2) ◽  
pp. 389-402 ◽  
Author(s):  
P. Kebarle ◽  
F. P. Lossing
Keyword(s):  
Acetic Acid ◽  
Free Radicals ◽  
Formic Acid ◽  
Methyl Formate ◽  
Intramolecular Rearrangement ◽  
Significant Extent ◽  
Alternative Mode ◽  
Decomposition Reactions ◽  
Intramolecular Rearrangements ◽  
No Free Radicals

The Hg(3P1) photosensitized decomposition of formic acid proceeds by two intramolecular rearrangement reactions, leading respectively to H2O and CO, and to H2 and CO2. No free radicals are produced. The decomposition reactions of methyl formate and of acetic acid proceed predominantly by the formation of free radicals, but intramolecular rearrangements also occur to a significant extent. For both these latter compounds the evidence suggests the occurrence of two modes of dissociation into free radicals:[Formula: see text]No evidence for the alternative mode of dissociation[Formula: see text]was found.

A selected ion flow tube study of the reactions of various nitrogen containing ions with formic acid, acetic acid, and methyl formate

2005 ◽  
Vol 247 (1-3) ◽  
pp. 55-60 ◽  
Author(s):  
Douglas M. Jackson ◽  
Nathan J. Stibrich ◽  
Jason L. McLain ◽  
Lillian D. Fondren ◽  
Nigel G. Adams ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Formic Acid ◽  
Methyl Formate ◽  
Flow Tube ◽  
Ion Flow ◽  
Selected Ion Flow Tube ◽  
Tube Study

The resonant Auger spectra of formic acid, acetaldehyde, acetic acid and methyl formate

2003 ◽  
Vol 289 (1) ◽  
pp. 57-67 ◽  
Author(s):  
U. Hergenhahn ◽  
A. Rüdel ◽  
K. Maier ◽  
A.M. Bradshaw ◽  
R.F. Fink ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Formic Acid ◽  
Methyl Formate ◽  
Auger Spectra

Reactions of formic acid. 1. The iridium-catalyzed synthesis of acetic acid from methyl formate

1982 ◽  
Vol 1 (12) ◽  
pp. 1693-1699 ◽  
Author(s):  
Roy L. Pruett ◽  
Raymond T. Kacmarcik
Keyword(s):  
Acetic Acid ◽  
Formic Acid ◽  
Methyl Formate

Confirmatory Tests for Aflatoxin B1

1964 ◽  
Vol 47 (5) ◽  
pp. 801-803 ◽  
Author(s):  
Peter John Andrellos ◽  
George R Reid
Keyword(s):  
Acetic Acid ◽  
Thin Layer ◽  
Formic Acid ◽  
Thionyl Chloride ◽  
Aflatoxin B1 ◽  
Trifluoroacetic Acid ◽  
Reaction Products ◽  
Confirmatory Tests ◽  
Aflatoxin B ◽  
Layer Chromatography

Abstract Three confirmatory tests have been devised to identify aflatoxin B±. Portions of the isolated toxin are treated with formic acid-thionyl chloride, acetic acid-thionyl chloride, and trifluoroacetic acid, respectively, and aliquots of the three fluorescent reaction products are spotted on thin-layer chromatography plates. Standards treated with each of the three reagents, plus an untreated standard, are spotted on the same plate, and after development the spots are compared under ultraviolet light.

α-DEUTERIUM KINETIC ISOTOPE EFFECTS IN SOLVOLYSES OF endo-NORBORNYL p-BROMOBENZENESULFONATE

1965 ◽  
Vol 43 (8) ◽  
pp. 2254-2258 ◽  
Author(s):  
C. C. Lee ◽  
Edward W. C. Wong
Keyword(s):  
Acetic Acid ◽  
Formic Acid ◽  
Isotope Effects ◽  
Kinetic Isotope Effects ◽  
Aqueous Dioxane ◽  
Kinetic Isotope ◽  
Different Temperatures

endo-Norbornyl-2-d p-bromobenzenesulfonate was synthesized and the isotope effects, as measured by kH/kD, were determined over a range of temperatures for solvolyses in 30% water – 70% dioxane, acetic acid, and formic acid. Values of kH/kD are of the order of 1.20. The data appear to indicate slightly higher isotope effects as the solvents are changed from aqueous dioxane to acetic acid to formic acid, as well as somewhat higher isotope effects at lower temperatures. Possible mechanistic implications of these results are presented. Relative titrimetric acetolysis rates, kexo/kendo, at different temperatures, and enthalpies and entropies of activation for these acetolyses are evaluated and discussed.

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