3-Bromothioanisole is a meta-substituted aromatic thio-ether that couples an electron-donating methyl-sulfide unit with an aryl bromide handle. This combination makes the molecule a versatile building block for:
Regioselective Suzuki, Heck and Buchwald–Hartwig cross-couplings that deliver meta-substituted bi-aryl sulfides, sulfoxides or sulfones under mild conditions (dioxane, 50–110 °C);
Directed ortho-metalation (DoM) chemistry using TMP-Zn or TMP-Mg bases, enabling one-pot access to multi-substituted benzene rings;
Selective S-oxidation to the corresponding sulfoxide or sulfone (H₂O₂/AcOH, rt, 1 h, 95 % yield) for agro-chemical and fragrance applications;
Thio-ether ligand precursors in crop-protection agents and as linkers in functional materials.
The compound is stable for ≥ 24 months when stored sealed, dry and at ambient temperature; it exhibits low vapour pressure and is classified as an irritant with a pronounced odour (Xi, R36/37/38, UN 3334) . Commercial lots are supplied under nitrogen with batch-specific COA, GC-MS, NMR and MSDS documentation suitable for cGMP or ISO-9001 workflows.
