Dibromoborane-dimethyl sulfide chemoselectively deoxygenates aliphatic and aromatic sulfoxides to the corresponding sulfides in excellent chemical yields in CH2Cl2 solvent in 15 minutes at both 0°C and room temperature, in the presence of reducible functional groups, such as alkene, ketone, ester, lactone, nitrile, amide, azide, sulfone, and N-oxide.
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