Related Products of 626-43-7, These common heterocyclic compound, 626-43-7, name is 3,5-Dichloroaniline, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
5-Bromo-2-methoxybenzenesulfonyl chloride(857mg, 3mmol) was dissolved in dichloromethane(6mL). A solution of 3,5-dichloroaniline(510mg, 3.15mmol) and pyridine(261mg, 3.3mmol) in dichloromethane(2mL) was added dropwise under ice cooling and argon atmosphere, and the mixture was stirred at room temperature for 6 hours. After the reaction mixture was diluted with dichloromethane, washed successively with 2N hydrochloric acid, water, and brine, dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure. The obtained residue was crystallized from n-hexane-ethyl acetate to give 5-bromo-2-methoxy-N-(3,5-dichloro)benzenesulfonamide(900mg, 73.0%) as a white crystal.1H-NMR(DMSO-d6): delta 4.03(3H, s), 6.92(1H, d, J=9.0Hz), 7.01(2H, d, J=1.8Hz), 7.07-7.08(1H, m), 7.24(1H, brs), 7.63(1H, dd, J=8.7, 2.4Hz), 7.99(1H, d, J=2.4Hz).
The synthetic route of 626-43-7 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Institute of Medicinal Molecular Design, Inc.; EP1512396; (2005); A1;,
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