Triethylborane
ALDRICH/257192 - ≥95%
Synonym: Triethylboron
CAS Number: 97-94-9
Empirical Formula (Hill Notation): C6H15B
Molecular Weight: 97.99
EC Number: 202-620-9
MDL Number: MFCD00009022
Linear Formula: (C2H5)3B
Product Type: Chemical
| assay | ≥95% |
| bp | 95 °C (lit.) |
| density | 0.677 g/mL at 25 °C (lit.) |
| InChI | 1S/C6H15B/c1-4-7(5-2)6-3/ |
| InChI key | LALRXNPLTWZJIJ-UHFFFAOYSA |
| mp | −93 °C (lit.) |
| Quality Level | 100  |
| reaction suitability | reagent type: reductant |
| refractive index | n |
| SMILES string | CCB(CC)CC |
| Application: | Reagent for: • Enantioselective umpolung allylation of aldehydes • Preparation of tetramethylammonium trialkylphenylborate salts Catalyst for: • Radical reductions of alkyl bromides and iodides bearing electron withdrawing groups with N-heterocyclic carbene boranes • Synthesis of 1-substituted pyrrolines by N-diallylation of amines and ring-closing metathesis • Decarboxylative C-C bond cleavage reactions • Alkene hydrogenations • Aminyl radical cyclizations onto silyl enol ethers Modifier for single-site organochromium ethylene polymerization catalysts |
| Application: | Used with lithium tri-tert-butoxyaluminohydride (cat. no. L2904) in the reductive cleavage of ethers and epoxides. Used in the deoxygenation of primary and secondary alcohols. |
| General description: | Triethylborane (Et3B) is an organoborane pyrophoric liquid. It is prepared on the plant scale by the reaction of AlEt3 and KBF4. Et3B is widely used as a precursor for the preparation of reducing agents such as lithium triethylborohydride and sodium triethylborohydride. It can also be utilized as an initiator in radical cyclization reactions. |
| Legal Information: | Aldrich is a registered trademark of Sigma-Aldrich Co. LLC |
| Legal Information: | Sure/Pac is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 100 g in Sure/Pac™ |
| Packaging: | Supplied in a Sure/Pac™ cylinder and has a 1/4-turn bronze ball valve with a female 1/4" NPT outlet thread (Z122661 ) installed. Before using the cylinder, ensure that the valve is closed, then remove carbon steel plug that seals the outlet valve. Compatible with the following:• Aldrich® Sure/Pac™ station for liquefied gases Z566446 • PTFE Sealing tape Z104388 or Z221880 • Straight septum-inlet adapter Z118141 with septa Z565687 or Z565695 For instructions please refer to technical bulletin AL-136: The Aldrich Sure/Pac™ Cylinder System |
| Symbol |    GHS02,GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H225 - H250 - H301 - H314 |
| Precautionary statements | P210 - P231 + P232 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | F,C |
| Risk Statements | 17-22-34 |
| Safety Statements | 7-23-26-36/37/39-43-45 |
| RIDADR | UN 2845 4.2 |
| WGK Germany | WGK 1 |
| Flash Point(F) | -32.8 °F |
| Flash Point(C) | -36 °C |
| Purity | ≥95% |
| bp | 95 °C (lit.) |
| mp | −93 °C (lit.) |
| Density | 0.677 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352001 |