Used as a versatile reagent in organic synthesis, particularly in carbon-carbon bond-forming reactions. It acts as a dithiane anion equivalent, enabling nucleophilic acylation reactions through umpolung (polarity reversal) strategies. This allows for the introduction of acyl anion equivalents in the synthesis of ketones and aldehydes from electrophilic precursors. Commonly employed in the preparation of complex molecules such as natural products and pharmaceuticals where selective functional group transformations are required. Its stability and ease of deprotonation make it valuable in directed lithiation processes and multi-step synthetic sequences.