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Published TCIMAIL newest issue No.198
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CAS RN: 25015-63-8 | Product Number: T2572
4,4,5,5-Tetramethyl-1,3,2-dioxaborolane
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Purity: >97.0%(GC)(T)
Synonyms:
- Pinacol Borane
- HBpin
Product Documents:
| Size | Unit Price | Belgium | Japan* | Quantity |
|---|---|---|---|---|
| 5G |
€39.00
|
Contact Us | ≥100 |
|
| 25G |
€135.00
|
1 | ≥80 |
|
*Stock available in Belgium will be delivered in 1 to 3 days
*Stock available in Japan will be delivered in 1 to 2 weeks (excludes regulated items and dry ice shipments).
| Product Number | T2572 |
| Purity / Analysis Method | >97.0%(GC)(T) |
| Molecular Formula / Molecular Weight | C__6H__1__3BO__2 = 127.98 |
| Physical State (20 deg.C) | Liquid |
| Storage Temperature | Refrigerated (0-10°C) |
| Store Under Inert Gas | Store under inert gas |
| Condition to Avoid | Moisture Sensitive,Heat Sensitive |
| Packaging and Container | 25G-DualSeal Bottle (View image) |
| CAS RN | 25015-63-8 |
| Reaxys Registry Number | 7802871 |
| PubChem Substance ID | 87560970 |
| MDL Number | MFCD00674030 |
Specifications
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 97.0 % |
| Purity(Neutralization titration) | min. 97.0 % |
| NMR | confirm to structure |
Properties (reference)
| Boiling Point | 43 °C/50 mmHg |
| Flash point | 5 °C |
| Specific Gravity (20/20) | 0.89 |
| Refractive Index | 1.40 |
GHS
| Pictogram |
|
| Signal Word | Danger |
| Hazard Statements | H225 : Highly flammable liquid and vapour. H261 : In contact with water releases flammable gases. |
| Precautionary Statements | P231 + P232 : Handle and store contents under inert gas. Protect from moisture. P210 : Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 : Keep container tightly closed. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P302 + P335 + P334 : IF ON SKIN: Brush off loose particles from skin. Immerse in cool water. |
Related Laws:
Transport Information:
| UN Number | UN3399 |
| Class | 4.3 / 3 |
| Packing Group | II |
| HS Number | 2920907070 |
Application
Borylation of Triflate with Pinacolborane
Typical procedure: To a degassed solution of L-tyrosine triflate derivative (500 mg, 1.17 mmol) and NMM (0.129 mL, 1.17 mmol) in dioxane (5 mL) is added PdCl2(dppf).CH2Cl2 (4.8 mg, 0.0059 mmol) and pinacolborane (0.255 mL, 1.76 mmol) at room temperature. The reaction mixture is then stirred for 24 h at 80 ℃. After cooling to room temperature, the mixture is concentrated and directly purified by silica gel column chromatography (heptane : ethyl acetate = 3 : 1) to give the borylation product as a colorless viscous oil (445 mg, 94% yield).
References
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