(3-Bromopropyl)triphenylphosphonium bromide
(3-Bromopropyl)triphenylphosphonium bromide (CAS: 3607-17-8) is a vital organic reagent with the molecular formula Br(CH2)3P(C6H5)3Br and a molecular weight of 466.19. This phosphonium salt is instrumental in various synthetic transformations, notably in carbon-carbon bond formation and olefination reactions. Its utility extends to the synthesis of complex organic molecules, making it a valuable component in research and development across chemical and pharmaceutical industries.
- IUPAC
- NSC 84074

C-C Bond Formation and Olefination
This compound serves as a key reactant in Wittig reactions for the olefination of aldehydes and ketones, and in various C-C bond-forming strategies. It is employed in the synthesis of functionalized polyurethanes and in rearrangement reactions.
Synthesis of Organic Intermediates
It participates in reactions such as semipinacol rearrangement, direct arylation, and cycloisomerization of bromodienes and enynes. These transformations are crucial for building complex molecular architectures.
Polymer Chemistry
The reagent is involved in the synthesis of functionalized polyurethanes through processes including cationic ring-opening polymerization and click chemistry, enabling the development of advanced materials.
| Molecular weight | 466.19 |
|---|---|
| Linear formula | Br(CH2)3P(C6H5)3Br |
| Assay | 98% |
| Application | Reactant involved in:• Synthesis of functionalized polyurethanes using cationic ring-opening polymerization and click chemistry1• Semipinacol rearrangement and direct arylation2• Olefination of benzaldehydes3• C-H activation / cycloisomerization4• Intramolecular dehydrobromination5• Cycloisomerizations of bromodienes and enynes6 |
| Melting point | 228-230 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 (3-Bromopropyl)triphenylphosphonium bromide used for?
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It is used in C-C bond formation, olefination reactions (including Wittig reactions), synthesis of functionalized polyurethanes, semipinacol rearrangement, direct arylation, C-H activation/cycloisomerization, and cycloisomerizations of bromodienes and enynes.
What are the CAS number and formula for (3-Bromopropyl)triphenylphosphonium bromide?
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The CAS number is 3607-17-8, and the linear formula is Br(CH2)3P(C6H5)3Br.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product at a minimum assay of 98%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should (3-Bromopropyl)triphenylphosphonium bromide be handled?
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This compound is classified as a Warning. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with a dust mask (type N95 US), eyeshields, and gloves. Ensure adequate ventilation.
Is (3-Bromopropyl)triphenylphosphonium bromide a controlled substance?
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The provided data does not indicate that this compound is a controlled substance.
How is (3-Bromopropyl)triphenylphosphonium bromide shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Specific shipping and export details can be provided upon inquiry.
How can I request a sample or quote?
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To request a sample or quote for (3-Bromopropyl)triphenylphosphonium bromide, please contact our sales team through the website or by phone.
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