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Methyl 4-bromo-2-bromomethylbenzoate
Methyl 4-bromo-2-bromomethylbenzoate (CAS 78471-43-9) is a strategically bifunctional halogenated aromatic ester engineered for pharmaceutical intermediate synthesis, agrochemical development, and materials science applications. This molecule integrates a benzoate core—a benzene ring with a methyl ester substituent—with two distinct bromine functionalities: an aryl bromine at the C4 position and a benzyl bromine (bromomethyl) at the C2 position. This dual-bromine architecture with differentiated reactivity enables orthogonal synthetic strategies: the benzyl bromide is highly reactive towards nucleophilic substitution (SN2), while the aryl bromide is suited for Pd-catalyzed cross-coupling (Suzuki, Stille, Negishi). The methyl ester moiety provides additional versatility for hydrolysis to the acid, transesterification, or amide coupling. Compared to its acid analog (CAS 68837-59-2), this ester form offers enhanced lipophilicity and compatibility with base-sensitive reactions. This intermediate is particularly valuable for constructing complex biaryl systems, fused heterocycles, kinase inhibitor cores, and functional materials where sequential functionalization at the bromine sites is critical. Manufactured with purity ≥98% under controlled conditions, it supports drug discovery programs requiring modular access to differentially halogenated aromatic esters with tunable reactivity.
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