1-Ethynylcyclohexene
1-Ethynylcyclohexene (CAS: 931-49-7), with the molecular formula C<sub>6</sub>H<sub>9</sub>C≡CH and a molecular weight of 106.17 g/mol, is a terminal alkyne. This versatile organic building block is primarily employed in chemical synthesis. Its utility lies in its reactive ethynyl group, allowing for a range of coupling and addition reactions crucial for constructing more complex molecular architectures in research and development settings.
Organic Synthesis Intermediate
1-Ethynylcyclohexene serves as a valuable intermediate in the synthesis of diverse organic compounds. Its terminal alkyne functionality readily participates in reactions such as Sonogashira couplings, click chemistry, and hydrofunctionalization, enabling the creation of complex carbon frameworks.
Building Block for Complex Molecules
As a key building block, this alkyne is instrumental in the construction of novel molecules for pharmaceutical research and materials science. Its cyclohexene moiety provides a rigid cyclic structure that can be incorporated into larger target molecules, influencing their physical and chemical properties.
Research and Development
This compound is frequently utilised in academic and industrial research laboratories for exploring new synthetic methodologies and developing innovative chemical entities. Its availability facilitates advancements in various fields requiring custom organic synthesis.
| Molecular weight | 106.17 |
|---|---|
| Linear formula | C6H9C≡CH |
| Assay | 99% |
| Boiling point | 148-151 °C(lit.) |
| Density | 0.903 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.496(lit.) |
| Storage temperature | 2-8°C |
| Contains / stabiliser | ≤0.2% BHT as stabilizer |
Hazard statements
- H226Flammable liquid and vapour
- 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 | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 29 °C / 84.2 °F |
| Transport (UN / ADR) | UN 3295C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| Safety statements (S) | 26 |
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 1-Ethynylcyclohexene used for?
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1-Ethynylcyclohexene is used as an intermediate and building block in organic synthesis, particularly in research and development for creating complex molecular architectures.
What are the CAS number and molecular formula for 1-Ethynylcyclohexene?
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The CAS number for 1-Ethynylcyclohexene is 931-49-7, and its molecular formula is C<sub>6</sub>H<sub>9</sub>C≡CH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Ethynylcyclohexene with an assay of 99%. We do not represent this product as meeting any pharmacopoeial standards such as USP, BP, or EP.
How should 1-Ethynylcyclohexene be handled safely?
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1-Ethynylcyclohexene is a flammable liquid and vapour (H226) and can cause skin (H315), eye (H319), and respiratory irritation (H335). Always handle in a well-ventilated area, wear appropriate personal protective equipment including safety goggles, face shields, and suitable gloves, and avoid ignition sources.
How is 1-Ethynylcyclohexene packed and shipped?
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1-Ethynylcyclohexene is typically packed in accordance with UN 3295C 3 / PGIII regulations for shipping. Storage at 2-8°C is recommended. Please contact us for specific export or bulk packaging inquiries.
How can I request a sample or quote for 1-Ethynylcyclohexene?
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To request a sample or obtain a quote for 1-Ethynylcyclohexene, please contact our sales team via the website or direct inquiry form, providing your contact details and the quantity required.
How is 1-Ethynylcyclohexene synthesized?
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Published preparations of 1-Ethynylcyclohexene are documented in the chemical literature and patent records — see the synthesis and sourcing section on this page for reference links. Tech Serve Solutions supplies 1-Ethynylcyclohexene ready to use; request a quote for current grades and pack sizes.
How 1-Ethynylcyclohexene (931-49-7) is synthesized — and where to buy it
1-Ethynylcyclohexene is a conjugated enyne — a compact partner for cycloaddition and cross-coupling studies that combines an alkyne terminus with a cyclohexene ring.
Published synthesis & references
Why make it?
Volatile enynes are awkward to prepare and store well. We ship an assayed lot with a Certificate of Analysis.
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