1-Pentynylboronic acid pinacol ester
1-Pentynylboronic acid pinacol ester (CAS 634196-62-6), with the molecular formula C11H19BO2 and a molecular weight of 194.08 g/mol, is a valuable alkynyl boronate ester. This organometallic reagent serves as a key building block in organic synthesis, particularly in cross-coupling reactions. Its structure facilitates the introduction of pentynyl functionalities into complex molecules, finding utility in the development of novel chemical entities and materials.
- IUPAC
- 2-(1-Pentynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Organic Synthesis Intermediate
1-Pentynylboronic acid pinacol ester is employed as a versatile intermediate in various organic transformations. It is commonly used in Suzuki-Miyaura cross-coupling reactions to form carbon-carbon bonds, enabling the synthesis of complex organic structures.
Cross-Coupling Reactions
This compound is particularly useful for introducing the 1-pentynyl group into diverse molecular frameworks. Its application in palladium-catalyzed cross-coupling reactions allows for the efficient construction of substituted alkynes and related conjugated systems.
Materials Science
The unique structural features of 1-pentynylboronic acid pinacol ester make it a potential building block for novel materials. It can be incorporated into polymers or other advanced materials where specific electronic or structural properties are desired.
| Molecular weight | 194.08 |
|---|---|
| Empirical formula | C11H19BO2 |
| Assay | 90% |
| Boiling point | 68-72 °C/0.09 mmHg |
| Density | 0.9057 g/mL at 25 °C |
| Refractive index | n20/D 1.4479 |
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 68 °C / 154.4 °F |
| Transport (UN / ADR) | NA 1993 / PGIII |
| 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 1-Pentynylboronic acid pinacol ester used for?
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1-Pentynylboronic acid pinacol ester is used as an intermediate in organic synthesis, particularly in cross-coupling reactions like the Suzuki-Miyaura coupling, to introduce a 1-pentynyl group into organic molecules. It also finds applications in materials science.
What is the CAS number and formula for 1-Pentynylboronic acid pinacol ester?
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The CAS number for 1-Pentynylboronic acid pinacol ester is 634196-62-6, and its empirical formula is C11H19BO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Pentynylboronic acid pinacol ester with a purity of 90% (assay). TSS does not represent this product as USP, BP, or EP grade.
How should 1-Pentynylboronic acid pinacol ester be handled and stored?
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Handle 1-Pentynylboronic acid pinacol ester with appropriate personal protective equipment, including eyeshields and gloves. Ensure adequate ventilation, using a half-mask respirator if necessary. Store in a cool, dry place away from incompatible materials. It has a flash point of 68 °C.
Is 1-Pentynylboronic acid pinacol ester shipped internationally?
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Yes, Tech Serve Solutions, a specialist global supplier and exporter since 1998, can ship 1-Pentynylboronic acid pinacol ester internationally.
How can I request a sample or quote for 1-Pentynylboronic acid pinacol ester?
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To request a sample or quote for 1-Pentynylboronic acid pinacol ester, please contact our sales team through the website or by phone.
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