3-(tert-Butoxycarbonyl)benzeneboronic acid is an organoboron compound featuring a benzene ring substituted with a boronic acid group and a tert-butoxycarbonyl (Boc) protecting group. The boronic acid moiety enables it to participate in key cross-coupling reactions, most notably the Suzuki-Miyaura reaction, which is fundamental for constructing biaryl and other carbon-carbon bonds. The Boc group serves as a widely used protecting group for amines, making this compound a versatile bifunctional building block. Its primary application is in medicinal chemistry and pharmaceutical research as a key synthetic intermediate. It is frequently employed in the synthesis of complex molecules, including active pharmaceutical ingredients (APIs) and drug candidates. The presence of both reactive handles allows for sequential and selective functionalization, facilitating the construction of diverse molecular scaffolds. This compound is particularly valuable for introducing a Boc-protected aniline or benzoic acid derivative into a target structure after deprotection. As a commercial product, it is typically supplied as a white to off-white solid and requires storage under inert conditions to maintain stability. It is a standard reagent in the toolkit of synthetic organic chemists working on drug discovery and development projects.