A further study of acetylacetone nitrosation
2013; Royal Society of Chemistry; Volume: 11; Issue: 6 Linguagem: Inglês
10.1039/c2ob26073e
ISSN1477-0539
AutoresEmilia Iglesias, Isabel Brandariz,
Tópico(s)Fluorine in Organic Chemistry
ResumoThe nitrosation of acetylacetone (AcAc) has been revised in an aqueous acid medium of perchloric acid and buffers of mono-, di-, or tri-chloroacetic acid. The results show that in the presence of buffers, under conditions of [nit] ≪ [AcAc] (nit = sodium nitrite) the reaction cannot be studied by UV-Vis spectroscopy, contrary to the recently published paper by García-Rio et al. (J. Org. Chem., 2008, 73, 8198). The present study also corroborates the previously published mechanism of AcAc nitrosation, where no base-catalysis was observed. Contrarily, the low effect of buffers was attributed to the formation of nitrosyl chloro-, dichloro- or trichloro-acetate salts that are new nitrosating agents.
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