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By R. J. Cremlyn

Sulfur chemistry is turning into more and more very important because the position of this point is explored in either organic and environmental fields. After the preliminary chapters have mentioned the synthesis, reactivity, and homes of the compounds quite often, all the subsequent 9 chapters takes a selected sulfur containing useful team and expands the dialogue on man made systems. the ultimate bankruptcy seems to be on the significant makes use of of organo-sulfur compounds and their influence on organic and environmental parts.

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3 Other methods of desulfuration are given in Chapter 10, p. 214. Desulfuration is important in many synthetic transformations in which a sulfur atom is introduced to provide the 4 Thiols, Sulfides and Sulfenic acids 49 required reactivity but then has to be removed since it is not required in the final product. 30), the attachment of electronegative sulfur atoms activates suitably placed methylene hydrogen atoms (reactive a-hydrogens) towards nucleophilic attack, allowing the formation of stabilised carbanions which can undergo further reactions.

C. Martin, Chap. 8, p. 408. 7. E. 1. 8. L. Pauling, The Nature of the Chemical Bond, 1st Edn, Comell University Press, Ithaca, NY, 1939. 4 Thiols, Sulfides and Sulfenic acids 41 4 — Thiols, Sulfides and Sulfenic Acids Thiols, or thioalcohols (RSH),1,2a are sulfur analogues of alcohols and phenols in which the oxygen atom has been replaced by sulfur; they are derivatives of hydrogen sulfide in the same way that alcohols may be regarded as being derived from water. The volatile thiols have very unpleasant smells rather like the smell of hydrogen sulfide.

A. Nudelman, The Chemistry of Optically Active Sulfur Compounds, Gordon and Breach, New York, 1984. 6. Organic Sulfur Chemistry (Eds F. Bernardi, I. G. M. Csizmadia and A. Mangini), Elsevier, Amsterdam, 1985: (a) S. Oae, Chap. 1; (b) R. A. Hayes and J. C. Martin, Chap. 8, p. 408. 7. E. 1. 8. L. Pauling, The Nature of the Chemical Bond, 1st Edn, Comell University Press, Ithaca, NY, 1939. 4 Thiols, Sulfides and Sulfenic acids 41 4 — Thiols, Sulfides and Sulfenic Acids Thiols, or thioalcohols (RSH),1,2a are sulfur analogues of alcohols and phenols in which the oxygen atom has been replaced by sulfur; they are derivatives of hydrogen sulfide in the same way that alcohols may be regarded as being derived from water.

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