257192

Triethylboran

≥95%

• Synonym(e): Triethylboron
• Lineare Formel: (C₂H₅)₃B
• CAS-Nummer: 97-94-9
• Molekulargewicht: 97.99
• EG-Nummer: 202-620-9
• MDL-Nummer: MFCD00009022
• UNSPSC-Code: 12352001
• PubChem Substanz-ID: 24855572
• NACRES: NA.22

Eigenschaften

• Assay: ≥95%
• Eignung der Reaktion: reagent type: reductant
• Brechungsindex: n20/D 1.397 (lit.)
• bp: 95 °C (lit.)
• mp (Schmelzpunkt): −93 °C (lit.)
• Dichte: 0.677 g/mL at 25 °C (lit.)
• SMILES String: CCB(CC)CC
• InChI: 1S/C6H15B/c1-4-7(5-2)6-3/h4-6H2,1-3H3
• InChIKey: LALRXNPLTWZJIJ-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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.

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

Verpackung

Packaged in Sure/Pac^™ carbon steel cylinders with 1/4" NPTM chrome-plated bronze ball valve

Rechtliche Hinweise

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

Sicherheitshinweise

• Piktogramme: GHS02,GHS06,GHS05
• Signalwort: Danger
• H-Sätze: H250,H301,H314
• P-Sätze: P231 + P232 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P370 + P378
• Gefahreneinstufungen: Acute Tox. 3 Oral - Eye Dam. 1 - Pyr. Liq. 1 - Skin Corr. 1A
• Lagerklassenschlüssel: 4.2 - Pyrophoric and self-heating hazardous materials
• WGK: WGK 1
• Persönliche Schutzausrüstung: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter