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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Experimental and DFT Computational Insight into Nitrosamine Photochemistry-Oxygen Matters

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Author(s):
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Ghogare, Ashwini A. ; Debaz, Ciro J. ; Oliveira, Marilene Silva ; Abramova, Inna ; Mohapatra, Prabhu P. ; Kwon, Kitae ; Greer, Edyta M. ; Prado, Fernanda Manso ; Valerio, Hellen Paula ; Di Mascio, Paolo ; Greer, Alexander
Total Authors: 11
Document type: Journal article
Source: Journal of Physical Chemistry A; v. 121, n. 32, p. 5954-5966, AUG 17 2017.
Web of Science Citations: 2
Abstract

A nitrosamine photooxidation reaction is shown to generate a peroxy intermediate by experimental physical-organic methods. The irradiation of phenyl and methyl-substituted nitrosamines in the presence of isotopically labeled 18-oxygen revealed that an O atom was trapped from a peroxy intermediate to trimethylphosphite or triphenylphosphine, or by nitrosamine itself, forming two moles of nitramine. The unstable peroxy intermediate can be trapped at low temperature in postphotolyzed solution in the dark. Chemiluminescence was also observed upon thermal decomposition of the peroxy intermediate, that is, when a postphotolysis low-temperature solution is brought up to room temperature. A DFT study provides tentative information for cyclic nitrogen peroxide species on the reaction surface. (AU)

FAPESP's process: 12/12663-1 - Singlet molecular oxygen and peroxides in chemical biology
Grantee:Paolo Di Mascio
Support type: Research Projects - Thematic Grants
FAPESP's process: 11/10048-5 - Mapping adducts generated by endogenous and exogenous aldehydes: use as biomarkers of redox stress
Grantee:Marisa Helena Gennari de Medeiros
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/07937-8 - Redoxome - Redox Processes in Biomedicine
Grantee:Ohara Augusto
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC