Phenol ring nitration induced by the unprecedented reduction of the Cu(ii) centre by nitrogen dioxide

2013 ◽  
Vol 42 (46) ◽  
pp. 16264 ◽  
Author(s):  
Vikash Kumar ◽  
Aswini Kalita ◽  
Biplab Mondal
Keyword(s):  
Nitrogen Dioxide ◽  
Phenol Ring

Copper(ii) mediated phenol ring nitration by nitrogen dioxide

2015 ◽  
Vol 44 (46) ◽  
pp. 19909-19917 ◽  
Author(s):  
Vikash Kumar ◽  
Somnath Ghosh ◽  
Anoop Kumar Saini ◽  
Shaikh M. Mobin ◽  
Biplab Mondal
Keyword(s):  
Complex Formation ◽  
Nitrogen Dioxide ◽  
Phenoxyl Radical ◽  
Spectroscopic Evidence ◽  
Radical Complex ◽  
Reaction Proceeds ◽  
P Addition ◽  
Phenol Ring

Addition of nitrogen dioxide in the THF solutions of Cu(ii) complexes of N2O2type ligands, L1H2and L2H2resulted in the nitration at the 4-position of coordinated equatorial phenolate ring of the ligand frameworks. Spectroscopic evidence suggests that the reaction proceeds through a phenoxyl radical complex formation.

The Effect of Vitamin A on the Intermittent Nitrogen Dioxide Gas Exposure in Hamsters

1976 ◽  
Vol 34 ◽  
pp. 176-177
Author(s):  
J.C.S. Kim ◽  
M.G. Jourden ◽  
E.S. Carlisle
Keyword(s):  
Electron Microscopy ◽  
Vitamin A ◽  
Nitrogen Dioxide ◽  
Chronic Exposure ◽  
Light And Electron Microscopy ◽  
Specific Effect ◽  
Deficient Diet ◽  
Intermittent Exposure ◽  
Hypovitaminosis A ◽  
Gas Exposure

Chronic exposure to nitrogen dioxide in rodents has shown that injury reaches a maximum after 24 hours, and a reparative adaptive phase follows (1). Damage occurring in the terminal bronchioles and proximal portions of the alveolar ducts in rats has been extensively studied by both light and electron microscopy (1).The present study was undertaken to compare the response of lung tissue to intermittent exposure to 10 ppm of nitrogen dioxide gas for 4 hours per week, while the hamsters were on a vitamin A deficient diet. Ultrastructural observations made from lung tissues obtained from non-gas exposed, hypovitaminosis A animals and gas exposed animals fed a regular commercially prepared diet have been compared to elucidate the specific effect of vitamin A on nitrogen dioxide gas exposure. The interaction occurring between vitamin A and nitrogen dioxide gas has not previously been investigated.

Working conditions of employees of energy enterprises from the position of non-carcinogenic risks

2020 ◽  
pp. 606-606
Author(s):  
O. V. Grebeneva ◽  
A. Z. Shadetova ◽  
M. V. Rusyaev
Keyword(s):  
Nitrogen Dioxide ◽  
Working Conditions ◽  
Respiratory Diseases ◽  
Combined Effects ◽  
Motor Transport ◽  
Dust Aerosols ◽  
Mineral Oils ◽  
Target Organs ◽  
Power Enterprise

The coefficients of danger to health of 84 workers of 4 lowering stations of the power enterprise from inhalation influence of pollutants of motor transport are calculated: nitrogen dioxide, dust, aerosols of mineral oils and hydrocarbons. The risk of combined effects of chemicals on the target organs was determined by an increase in the chance of respiratory diseases by 1.77 times.

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