Dibromoborane dimethyl sulfide complex
Dibromoborane dimethyl sulfide complex (CAS: 55671-55-1), with the linear formula (CH3)2S·BHBr2 and a molecular weight of 233.76 g/mol, is a specialised organoboron compound. It serves as a versatile reactant in organic synthesis, particularly for carbon-carbon bond formation via reductive elimination and in various borylation reactions. This complex is supplied by Tech Serve Solutions for advanced chemical research and development applications.
- IUPAC
- Boron dibromide methyl sulfide complex,Dibromo(dimethyl sulfide)(hydro)boron,Dibromo(dimethyl sulfide)borane,Dibromoborane compound with dimethylsulfane,Dibromoborane dimethyl sulfide
- Synonyms
- Boron dibromide methyl sulfide complexDibromo(dimethyl sulfide)(hydro)boronDibromo(dimethyl sulfide)boraneDibromoborane compound with dimethylsulfaneDibromoborane dimethyl sulfide

Reductive Elimination Reactions
Dibromoborane dimethyl sulfide complex is employed as a reactant in reductive elimination processes, facilitating the formation of new carbon-carbon bonds in organic molecules.
Lithiation-Borylation
This complex participates in lithiation-borylation reactions, particularly when used with Hoppe's lithiated carbamates, enabling the introduction of boron moieties.
Boron Analogue Synthesis
It is utilised in the preparation of boron analogues of biologically relevant compounds such as uracil, contributing to medicinal chemistry research.
Boronation and Cyclic Boronium Salt Formation
The compound is a key reagent in boronation reactions, leading to the formation of cyclic boronium salts, which are important intermediates in synthesis.
Hydroboration and Epoxide Ring Opening
Dibromoborane dimethyl sulfide complex finds application in hydroboration reactions and the ring opening of terminal epoxides, showcasing its utility in diverse synthetic pathways.
| Molecular weight | 233.76 |
|---|---|
| Linear formula | (CH3)2S · BHBr2 |
| Density | 1.415 g/mL at 25 °C |
| Concentration | 1.0 M in methylene chloride |
| Application | Reactant for:• Reductive elimination C-C bond forming reactions1• Lithiation-borylation reaction with Hoppe′s lithiated carbamates2• Preparation of boron analogues of uracil3• Boronation reactions for formation of cyclic boronium salts4• Hydroboration reactions5• Ring opening of terminal epoxides6 |
| Melting point | 30-35 °C(lit.) |


Hazard statements
- H228Flammable solid
- H261In contact with water releases flammable gas
- H314Causes severe skin burns and eye damage
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P231Handle under inert gas
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
- P422
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 26 °C / 78.8 °F |
| Transport (UN / ADR) | UN 3396 4.3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-14/15-34 |
| Safety statements (S) | 16-26-36/37/39-45 |
| Supplemental hazards | Reacts violently with water. |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Dibromoborane dimethyl sulfide complex used for?
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Dibromoborane dimethyl sulfide complex is used as a reactant for C-C bond forming reactions via reductive elimination, lithiation-borylation reactions, preparation of boron analogues of uracil, boronation reactions for cyclic boronium salts, hydroboration reactions, and ring opening of terminal epoxides.
What are the CAS number and formula for Dibromoborane dimethyl sulfide complex?
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The CAS number is 55671-55-1 and the linear formula is (CH3)2S·BHBr2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Dibromoborane dimethyl sulfide complex at a concentration of 1.0 M in methylene chloride. TSS does not represent this product as USP/BP/EP or any other pharmacopoeia grade.
How should Dibromoborane dimethyl sulfide complex be handled safely?
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Dibromoborane dimethyl sulfide complex is flammable (H228) and reacts violently with water (H314, Supplemental Hazard Statement: Reacts violently with water). It causes severe skin burns and eye damage (H314). Handle with extreme caution, wearing appropriate personal protective equipment including eyeshields, face shields, and suitable gloves. Ensure adequate ventilation and avoid contact with water. Store away from ignition sources.
Is Dibromoborane dimethyl sulfide complex shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Dibromoborane dimethyl sulfide complex, adhering to all relevant shipping and export regulations.
How can I request a quote or sample for Dibromoborane dimethyl sulfide complex?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number (55671-55-1).
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