Thiohydroximic Acids: Versatile Reagents for Organic Synthesis

Thiohydroximic acids are a heteroatom-rich class of compounds that have long been used only as a means to study the biology of their glucosinolate subclass. However, due to their wide range of reactivity and surprising stability, they have recently emerged as versatile reagents for heterocycle synthesis. In this Account we highlight the current and potential uses of thiohydroximic acids as building blocks for synthesis, with a focus on recent developments from our group. Thiohydroximic acids have already proven to be useful reagents for thioimidate N-oxides, thiazoline, and oxathiazole synthesis, and many more applications will likely emerge as we continue to evaluate their properties. 1 Synthesis of Thiohydroximic Acids 2 Synthesis of Cyclic Thioimidate N-Oxides 3 Synthesis of Thiazolines 4 Synthesis of 5H-1,4,2-Oxathiazoles 5 Summary