Bis(pinacolato)diboron
Bis(pinacolato)diboron (CAS: 73183-34-3; Formula: C12H24B2O4; Molar Mass: 253.94 g/mol) is a high-purity (99%) organoboron compound. This reagent is crucial for borylation reactions, particularly the <i>cis</i>-vicinal diborylation of acetylenes and olefins using platinum catalysis, and the borylation of aromatics via palladium catalysis. Its utility extends to chemical synthesis and research development.
- IUPAC
- 4,4,4′,4′,5,5,5′,5′-Octamethyl-2,2′-bi-1,3,2-dioxaborolane
- Synonyms
- 4,4,4′,4′,5,5,5′,5′-Octamethyl-2,2′-bi-1,3,2-dioxaborolane

Diborylation of Acetylenes and Olefins
Utilised for <i>cis</i>-vicinal diborylation reactions. This process is typically catalysed by platinum complexes, enabling the efficient introduction of two boron groups across double or triple bonds.
Borylation of Aromatic Compounds
Serves as a key reagent in palladium-catalysed borylation of aromatic systems. This transformation is fundamental in organic synthesis for creating new carbon-carbon or carbon-heteroatom bonds.
Organic Synthesis Reagent
A versatile reagent employed in various organic synthesis pathways. It facilitates the creation of complex molecules by enabling selective borylation of diverse substrates.
Research and Development
Available in development quantities for research purposes, supporting innovation in academic and industrial R&D laboratories exploring novel synthetic methodologies.
| Molecular weight | 253.94 |
|---|---|
| Empirical formula | C12H24B2O4 |
| Assay | 99% |
| Application | Reagent used for the cis-vicinal diborylation of acetylenes and olefins with Pt catalysis; borylation of aromatics by Pd catalysis.1 |
| Melting point | 137-140 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 Bis(pinacolato)diboron used for?
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Bis(pinacolato)diboron is a reagent used for the <i>cis</i>-vicinal diborylation of acetylenes and olefins with Pt catalysis, and for the borylation of aromatics by Pd catalysis. It is also widely used in organic synthesis and research and development.
What is the CAS number and chemical formula for Bis(pinacolato)diboron?
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The CAS number is 73183-34-3, and the chemical formula is C12H24B2O4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bis(pinacolato)diboron with an assay of 99% purity. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for Bis(pinacolato)diboron?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The substance has a WGK Germany rating of 3, indicating it is hazardous to water.
How is Bis(pinacolato)diboron packed and shipped?
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Tech Serve Solutions, as a global supplier and exporter, ensures that Bis(pinacolato)diboron is packed and shipped in compliance with all relevant international regulations for chemical transport.
How can I request a quote or sample?
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To request a quote or a sample of Bis(pinacolato)diboron, please contact our sales department through the TSS website or via direct inquiry, providing your specific requirements.
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