OXYGENATION OF SUBSTITUTED 2'-HYDROXYACETOPHENONE 4-BROMOPHENYLHYDRAZONES PROMOTED BY COBALT(II) SCHIFF BASE COMPLEX

DOI: 10.1016/S0040-4039(01)81691-9

Source and publish data:

Tetrahedron Letters p. 5805 - 5808 (1984)

Update date:2022-09-26

Topics:

Authors:

Nishinaga, Akira

Yamazaki, Shigekazu

Matsuura, Teruo

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Article abstract of DOI:10.1016/S0040-4039(01)81691-9

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.

Full text of DOI:10.1016/S0040-4039(01)81691-9

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