Inhibition of the formation of nitrosamines

Details Inhibition of the formation of nitrosamines Inhibition of the formation of nitrosamines

C - Chemistry, Metallurgy

07

C

C07C 211/08 (2006.01) C07C 209/90 (2006.01) C07C 211/35 (2006.01) C07C 291/04 (2006.01) C07D 295/023 (2006.01)

Patent

CA 2134332

2134332 9322273 PCTABS00027 Reaction of amine-containing substrates with hydrogen peroxide can suffer from certain problems, especially in the presence of transition metals. These problems include both in situ generation of impurities and particularly nitrosamines, which are allegedly carcinogenic, and also impaired product formation. The problems can be ameliorated by employing in the reaction mixture free radical scavengers, including in particular phenols and polyhydroxy-substituted aromatic compounds. The scavengers are advantageously employed in conjuction with a metal chelating agent such as polycarboxylic acid or an organopolyphosphonic acid.

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