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M K Unnikrishnan1, M N Rao

  • 1Department of Pharmaceutical Chemistry, College of Pharmaceutical Sciences, Manipal, India.

FEBS Letters
|April 20, 1992
PubMed

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2° Amines to N-Nitrosamines: Reaction with NaNO201:20

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Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.