Phenylselenyl bromide
Phenylselenyl bromide (CAS 34837-55-3) is an organoselenium compound with the molecular formula C<sub>6</sub>H<sub>5</sub>SeBr and a molecular weight of 235.97 g/mol. This chemical is primarily utilised as a reagent in organic synthesis, facilitating the preparation of complex organic molecules. It is a key building block for introducing selenium into organic structures, particularly in the synthesis of enones and specific heterocyclic compounds.
- IUPAC
- Benzeneselenenyl bromide,Benzeneselenyl bromide
- Synonyms
- Benzeneselenenyl bromideBenzeneselenyl bromide
Synthesis of Heterocyclic Compounds
Phenylselenyl bromide is employed in the preparation of specific heterocyclic compounds, such as exo- and endo-2-methyl-7-phenylselenyl-octahydro-8-oxa-2,7b-diaza-dicyclopenta[a,e]pentalene-1,3-dione.
Preparation of Enones
This reagent is used in the synthesis of enones through the selenenylation of α-cyano ketones. The process typically involves activation with a base like lithium naphthalenide.
Organic Synthesis Reagent
As a versatile building block, Phenylselenyl bromide serves as a valuable reagent in general organic synthesis, enabling the introduction of the phenylselenyl group into various organic frameworks.
| Molecular weight | 235.97 |
|---|---|
| Linear formula | C6H5SeBr |
| Assay | 98% |
| Boiling point | 107-108 °C/15 mmHg(lit.) |
| Application | Phenylselenyl bromide was used in the preparation of exo-2-methyl-7-phenylselenyl-octahydro-8-oxa-2,7b-diaza-dicyclopenta[a,e]pentalene-1,3-dione and endo-2-methyl-7-phenylselanyl-octahydro-8-oxa-2,7b-diaza-dicyclopenta[a,e]pentalene-1,3-dione1. It was also used in the synthesis of enones by selenenylation of α-cyano ketones with lithium naphthalenide2. |
| Melting point | 58-62 °C(lit.) |
Hazard statements
- H290May be corrosive to metals
- H301Toxic if swallowed
- H373May cause damage to organs through prolonged exposure
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2928 6.1/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/25-33-50/53 |
| Safety statements (S) | 20/21-28-45-60-61 |
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 Phenylselenyl bromide used for?
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Phenylselenyl bromide is used as a reagent in organic synthesis, notably for preparing specific heterocyclic compounds and for the synthesis of enones via selenenylation.
What is the CAS number and formula for Phenylselenyl bromide?
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The CAS number for Phenylselenyl bromide is 34837-55-3, and its linear formula is C6H5SeBr.
What grade and purity does Tech Serve Solutions supply for Phenylselenyl bromide?
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Tech Serve Solutions supplies Phenylselenyl bromide with a purity of 98% assay. We do not represent this product as USP, BP, or EP grade.
How should Phenylselenyl bromide be handled safely?
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Phenylselenyl bromide is a dangerous substance (Danger signal word) and is toxic if swallowed or inhaled (H301 + H331). It can also cause long-term health effects (H373) and is very toxic to aquatic life with long-lasting effects (H410). Handling requires appropriate personal protective equipment, including eyeshields, faceshields, gloves, and P2 respirator cartridges. Always consult the Safety Data Sheet (SDS) before use.
Is Phenylselenyl bromide a controlled substance?
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The provided data does not indicate that Phenylselenyl bromide is a controlled substance.
How is Phenylselenyl bromide packed and shipped?
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Phenylselenyl bromide is shipped as UN 2928, Hazard Class 6.1 (Toxic substances), Packing Group II. Packing and shipping procedures adhere to international regulations for hazardous materials.
How can I request a sample or quote for Phenylselenyl bromide?
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To request a sample or a quote for Phenylselenyl bromide, please contact the Tech Serve Solutions sales team through our website or by phone.
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