Heterocyclic Compounds
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ChemInform Abstract: Reactions of 5-Chloro-1,2,3-Thiadiazolium Salts with Activated Methylene Compounds.
First published: February 28, 1995
Abstract
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ChemInform Abstract
Reaction of thiadiazolium salts (I) or (VII) with methylene compounds, e.g. (II), (IV) or (IX), yields either mesoionic compounds (III) with restricted rotation around C-5 or thiadiazoles (VIII) with free rotation of the side-chain or mixtures of rotamers (V)/(VI) or (X)/(XI) . The product distribution of (X)/(XI) is solvent dependent.
