Spiro-fused (C2)-azirino-(C4)-pyrazolones, a new heterocyclic system. Synthesis, spectroscopic studies and X-ray structure analysis

DOI: 10.1021/jo030131t

Source and publish data:

Journal of Organic Chemistry p. 7943 - 7950 (2003)

Update date:2022-08-04

Topics:

Authors:

Holzer, Wolfgang

Claramunt, Rosa M.

Perez-Torralba, Marta

Guggi, Davide

Brehmer, Thomas H.

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Article abstract of DOI:10.1021/jo030131t

Reaction of 1-substituted 4-acyl-5-hydroxy-3-methyl-1H-pyrazoles (2) with hydroxylamine gives the corresponding "oximes" 3, which are mainly present as (Z)-2,4-dihydro-4-[(hydroxyamino)methylene]-3H-pyrazol-3-ones. Treatment of compounds 3 with trichloroa

Full text of DOI:10.1021/jo030131t

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