Tetrahedron Letters p. 5805 - 5808 (1984)
Update date:2022-09-26
Topics:
Nishinaga, Akira
Yamazaki, Shigekazu
Matsuura, Teruo
Substituted 2'-hydroxyacetophenone 4-bromophenylhydrazones are oxygenated readily in the presence of Co(Salpr) in ethanol to give 2-(4-bromophenylazo)-1,3-benzodioxoles in good yield.The results are rationalized in terms of the decomposition of a peroxy cobalt(III) complex intermediate by a mechanism similar to the Darkin oxidation.
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(1985)
