New Trifluoromethylated Pyridazines By Reductive Cyclization of Vinyldiazomethanes Bearing a Carbonyl Group

Guillaume, M.;Janousek, Z.;Viehe, HG.
(1995) Synthesis : journal of synthetic organic chemistry — n° 8, p. 920-922 (1995)

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  • Guillaume, M.
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  • Janousek, Z.
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  • Viehe, HG.
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Abstract
The synthesis of new vinyldiazomethanes from ethyl 2-diazo-4,4,4-trifluoroacetoacetate and Wittig or Horner-Emmons-Wadsworth (HEW) reagents is described. Vinyldiazomethanes which have a double bond bearing a carbonyl group undergo reductive cyclization in the presence of triphenylphosphine providing a new route to the pyridazine chemistry.
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Guillaume, M., Janousek, Z., & Viehe, HG. (1995). New Trifluoromethylated Pyridazines By Reductive Cyclization of Vinyldiazomethanes Bearing a Carbonyl Group. Synthesis : journal of synthetic organic chemistry, 8, 920-922. https://doi.org/10.1055/s-1995-4041 (Original work published 1995)