Preparation of pyrazoles from the C(α)NN-trianion of hydrazones having an α-hydrogen atom
- 1 January 1971
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- p. 1658-1660
- https://doi.org/10.1039/j39710001658
Abstract
Certain hydrazones having an α-hydrogen atom were treated with 3 mol. equiv. of n-butyl-lithium to give (presumably) the C(α)NN-trianions. These trianions were aroylated with esters at the α-carbanionic centre and cyclized with acid to give pyrazoles.Keywords
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