Introduction. Preparation of Organosulfur Reagents: Thiols. Sulfides. Disulfides and Polysulfides. Thio- and Dithioacetals and Related Compounds. Ketenedithioacetals and (-Oxoketenedithioacetals. Sulfoxides. Sulfones. Thiocarbonyl Compounds. Sulfonium Salts and Sulfur Ylides. Functional Modifications with Organosulfur Compounds: Introduction of Unsaturation. Radical Deoxygenation of Alcohols: The Barton Reaction. Oxidations of Alcohols. Asymmetric Reduction. Decarboxylation. The Pummerer Rearrangement. Miscellaneous Reactions. Organosulfur Compounds as Intermediates in Organic Synthesis: A Word on Desulfurization. C&150;C Bond-Forming Reactions. C=C Bond-Forming Reactions. Three-Membered Ring-Forming Reactions. Cyclopropanation, Formation of Epoxides. Pericyclic Reactions of Organosulfur Compounds. References. Index of Compounds and Methods.