SCHEDULED MAINTENANCE
4-Substituted thiosemicarbazones of ketones undergo oxidative cyclisation, catalysed by chromatographic adsorbents, giving Δ1-[1,2,4] triazoline-5-thiones, and oxidation on manganese dioxide to 5-imino-Δ3-[1,3,4]- thiadiazolines. The triazolinethiones may be converted into triazolinones. The reactions are strongly influenced by steric factors.
J. K. Landquist, J. Chem. Soc. C, 1970, 63 DOI: 10.1039/J39700000063
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