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Abstract
A large number of cyclic thiones has been synthesized. These include alicyclic and heterocyclic thiones, the latter including those with potential aromatic character. It is the intention of this paper to summarize the reactions of a number of simple systems of this type with a variety of reagents which lead to modification of the thione function. Reactions may either lead to oxidation of the molecule, replacement of the thione sulfur atom by oxygen, or even replacement by hydrogen. Data are also included for some thiols which are capable of tautomerism with thiones and give similar or related products.