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Synthesis 1988; 1988(12): 997-999
DOI: 10.1055/s-1988-27784
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An Efficient Synthesis of 4,4-Disubstituted 5,6-Dihydro-3(4H)-pyridinone 1-Oxides by Thermal Cyclisation of Unsaturated 1,2-Hydroxyiminoketones

Roger Bishop* , Perter R. Brooks, Stephen C. Hawkins
  • *School of Chemistry, The University of New South Wales, Kensington, New South Wales 2033, Australia
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Publication Date:
20 August 2002 (online)

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3,3-Disubstituted 1,2-hydroxyiminoketones 6 with the hydroxyimino group distal and δ,ε to an olefinic bond undergo thermal cyclisation to produce high yields of 4,4-disubstituted 5,6-dihydro-3(4H)-pyridinone 1-oxides 7.