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  (Nucleoside Chemistry)

Borane Dimethylsulfide

Other Names:

Borane-dimethyl sulfide complex

Dimethyl sulfide borane

(Dimethyl sulfide)trihydroboron


General Information:


CAS Number: 13292-87-0

Molecular Weight: 75.96 g/mol

Appearance: Colorless liquid

Melting Point: -38 C

Density: 0.801 g/mL at 25 C

Borane dimethylsulfide (BMS) is a complex of borane with dimethylsulfide. The other common complex of borane is borane-THF. BMS is more stable than borane-THF and is therefore available in higher concentrations. BMS has the drawback of being smelly due to its dimethylsulfide content.

Common Uses:

Reagent for the reduction of carboxylic acids to alcohols

Reagent for the reduction of esters to alcohols

Reagent for the reduction of nitriles to amines


Borane dimethylsulfide (BMS) is a flammable liquid.


1) Patent Reference: WO2011061214, page 87, (8.2 MB)

2) Patent Reference: WO2012069948, page 55, (3.9 MB)

3) UK Pat App GB 1463151A, page 132

4) Wikipedia: Borane dimethylsulfide (link)

5) L07705 Borane-dimethyl sulfide complex, 94% (link)

6) Dimethyl Sulfide Borane (link)

7) Burke, S. D.; Danheiser, R. L.; Handbook of Reagents for Organic Synthesis, Oxidizing and Reducing Agents

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