Used as a key intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. Its structure allows for selective functionalization, making it valuable in constructing complex molecules. Commonly employed in cross-coupling reactions, such as Suzuki and Heck reactions, to introduce vinyl or aryl groups. Also utilized in the synthesis of natural products and bioactive compounds where a dihydropyran scaffold is required. Its bromine atom serves as a good leaving group, facilitating nucleophilic substitution or metal-catalyzed transformations.