The reaction of acetic acid and nitrogen dioxide

1970 ◽  
Vol 48 (21) ◽  
pp. 3459-3461
Author(s):  
R. N. Pandey ◽  
Donald Barton
Keyword(s):  
Nitric Oxide ◽  
Acetic Acid ◽  
Nitrogen Dioxide ◽  
Vapor Phase

Nitric oxide was found to be an autocatalyst in the reaction of acetic acid and nitrogen dioxide at 470 and 527 °K in the vapor phase. The observed products, in addition to NO, were CO, CO2, and CH3NO2.

On the lead tetraacetate and related oxidations of aromatic ketoximes

1968 ◽  
Vol 46 (23) ◽  
pp. 3719-3726 ◽  
Author(s):  
M. M. Frojmovic ◽  
G. Just
Keyword(s):  
Nitric Oxide ◽  
Acetic Acid ◽  
Nitrogen Dioxide ◽  
Molecular Oxygen ◽  
Glacial Acetic Acid ◽  
Methylene Chloride ◽  
Lead Tetraacetate ◽  
Side Reactions ◽  
Oxidizing Agents

Fluorenone and benzophenone oxime react in glacial acetic acid with lead tetraacetate to give parent ketones, geminal dinitromethanes, iminyl ketal derivatives (9,9-difluorenylideniminoxylfluorene and 1,1-bis(diphenylmethylideniminoxyl)-diphenylmethane), and minor amounts of oxime O-acetate. Benzophenone nitrimine is also formed but only in the absence of oxygen. Side reactions due to nitric oxide, oxygen, and nitrogen dioxide take place. Separate studies with these oxidizing agents have therefore been conducted. The lead tetraacetate oxidation of these oximes in methylene chloride (or any other solvent) is complete with a half-mole equivalent of lead tetraacetate, is insensitive to molecular oxygen, and affords mainly parent ketone and ketazinemonoxides. No ketazine-bis-N-oxides, obtained from the ferricyanide oxidation of these oximes, are formed. The model oximes, benzil anti-monoxime, xanthone oxime, and indanone oxime have been studied in the light of these observations. Mechanisms involving iminoxyl radicals have been postulated for all reactions studied.

Reactions of nitric oxide and nitrogen dioxide with coenzyme Q: involvement of the isoprenic chain

2013 ◽  
Vol 11 (8) ◽  
pp. 1399 ◽  
Author(s):  
Paola Astolfi ◽  
Laurence Charles ◽  
Didier Gigmes ◽  
Lucedio Greci ◽  
Corrado Rizzoli ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitrogen Dioxide ◽  
Coenzyme Q

Vapor phase acylation of guaiacol with acetic acid over micro, nano and hierarchical MFI and BEA zeolites

2021 ◽  
Vol 285 ◽  
pp. 119826
Author(s):  
S. Gutiérrez-Rubio ◽  
M. Shamzhy ◽  
J. Čejka ◽  
D.P. Serrano ◽  
I. Moreno ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Vapor Phase

scholarly journals AGE-RELATED CHANGES IN PROSTAGLANDIN E2, NITRIC OXIDE, AND VASCULAR ENDOTHELIAL GROWTH FACTOR LEVELS IN GASTRIC MUCOSA DURING THE HEALING OF ACETIC ACID-INDUCED ULCER

2018 ◽  
Vol 11 (10) ◽  
pp. 517
Author(s):  
Ayodeji Folorunsho Ajayi ◽  
Busuyi David Kehinde ◽  
Olubodun Micheal Lateef ◽  
Bolaji Aderibigbe Akorede
Keyword(s):  
Nitric Oxide ◽  
Vascular Endothelial Growth Factor ◽  
Acetic Acid ◽  
Growth Factor ◽  
Gastric Mucosa ◽  
Prostaglandin E2 ◽  
Ulcer Healing ◽  
Vascular Endothelial ◽  
Epithelial Restitution ◽  
Endothelial Growth Factor

Objective: Nitric oxide (NO), prostaglandin E2 (PgE2), and vascular endothelial growth factor (VEGF) are fundamental regulators of epithelial restitution and angiogenesis. They play important roles in ulcer healing. Insights into their possible changes during gastric ulcer healing putting age into consideration could give a guide to the proper management of ulcers in the aging population. This study, therefore, examined alterations in the concentrations of PgE2, NO, and VEGF in the gastric mucosa of rats of different ages after induction of ulcer and during healing.Methods: Male Wister rats (aged 3, 6, and 18 months old) were divided into three groups according to their ages. The ulcer was induced using the acetic acid ulcer model. Healing indices studied on days 3, 7, and 14 were the macroscopic dimension of ulcer, stomach tissue concentration of PgE2, NO, and VEGF, with the immunohistochemical expression of VEGF.Results: Outcome of this study showed 100%, 88.36%, and 62.30% area of mucosa healed in 3-, 6-, and 18-month-old rats respectively, on day 14 post-induction of ulcer. PgE2, NO, and VEGF concentrations were inversely proportional to age during healing. Immunohistochemical staining showed that younger rat (3 and 6 months old) had higher expression of VEGF throughout the healing period.Conclusion: It was therefore concluded that the slower rate of healing in older rats could be due to reduced gastroprotection, epithelial restitution, and angiogenesis as age increases.

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