4,4′-Biphenyldiboronic acid
4,4′-Biphenyldiboronic acid (CAS: 4151-80-8) is an organoboron compound with the linear formula (HO)₂BC₆H₄C₆H₄B(OH)₂ and a molecular weight of 241.84 g/mol. This white solid serves as a critical building block in organic synthesis. Its primary applications lie in the development of advanced materials, including organic semiconductors for transistors and light-emitting diodes, as well as in the synthesis of complex organic molecules via coupling reactions.
- IUPAC
- 4,4′-(Dihydroxyboryl)-1,1′-biphenyl,4,4′-Biphenylenediboronic acid
- Synonyms
- (HO)2BC6H4C6H4B(OH)24,4′-(Dihydroxyboryl)-1,1′-biphenyl4,4′-Biphenylenediboronic acid

Organic Electronics Synthesis
4,4′-Biphenyldiboronic acid is utilized in the creation of organic semiconductors for applications in organic field-effect transistors (OFETs) and light-emitting diodes (LEDs). It is a key reactant in synthesising compounds like diazaboroles and arylboronates derived from catechol or dihydroxynaphthalene.
Advanced Material Development
This diboronic acid is employed in constructing cycloparaphenylenes through Suzuki coupling reactions. It also facilitates the synthesis of complex molecular architectures, such as back-to-back coupled 2,6-bis(triazol-1-yl)pyridine molecules.
Organometallic Reagent
As an organometallic reagent, it is involved in the synthesis of rectangular hosts through electrochemical reactions with methylaquacobaloxime and diamines, contributing to the field of coordination chemistry and material science.
| Molecular weight | 241.84 |
|---|---|
| Linear formula | (HO)2BC6H4C6H4B(OH)2 |
| Application | Reactant involved in synthesis of:• Organic field-effect transistors based on organic semiconductors containing diazaboroles1• Cycloparaphenylenes via Suzuki coupling2• 1,3,2-Diazaboroine derivatives for organic thin-film transistor applications3• Back-to-back coupled 2,6-bis(triazol-1-yl)pyridine molecules4• Rectangular host via electrochemical reactions with methylaquacobaloxime and diamine5• Arylboronates from reactions with catechol, dihydroxynaphthalene and diaminobenzenedithiol for use as organic field-effect transistors and light emitting diodes6 |
| Melting point | 300 °C (dec.)(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 4,4′-Biphenyldiboronic acid primarily used for?
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4,4′-Biphenyldiboronic acid is primarily used as a building block in organic synthesis for the development of organic semiconductors, advanced materials like cycloparaphenylenes, and organometallic compounds.
What is the CAS number and formula for 4,4′-Biphenyldiboronic acid?
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The CAS number is 4151-80-8 and the linear formula is (HO)₂BC₆H₄C₆H₄B(OH)₂.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4,4′-Biphenyldiboronic acid in technical/research grades. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
What are the safety considerations when handling 4,4′-Biphenyldiboronic acid?
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Handling requires appropriate personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The compound has a WGK Germany rating of 3, indicating it is hazardous to water.
How is 4,4′-Biphenyldiboronic acid packed, shipped, and exported?
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Tech Serve Solutions professionally packs, ships, and exports fine chemicals globally, adhering to all necessary regulations for safe transport.
How can I request a sample or quote for 4,4′-Biphenyldiboronic acid?
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To request a sample or a quotation for 4,4′-Biphenyldiboronic acid, please contact our sales team via the website or direct email.
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