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179701

Sigma-Aldrich

Triethylborane solution

1.0 M in THF

Synonym(s):

Triethylboron

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About This Item

Linear Formula:
(C2H5)3B
CAS Number:
97-94-9
Molecular Weight:
97.99
Beilstein:
1731462
MDL number:
MFCD00009022
UNSPSC Code:
12352001
eCl@ss:
38120201
PubChem Substance ID:
24850826
NACRES:
NA.22

form

liquid

Quality Level

100

reaction suitability

reagent type: reductant

concentration

1.0 M in THF

density

0.865 g/mL at 25 °C

SMILES string

CCB(CC)CC

InChI

1S/C6H15B/c1-4-7(5-2)6-3/h4-6H2,1-3H3

InChI key

LALRXNPLTWZJIJ-UHFFFAOYSA-N

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Application

Catalyst for:
  • Allylation of aldehydes
  • Decarboxylative C-C bond cleavage reactions
  • Rhenium hydride / boron Lewis acid cocatalysis of alkene hydrogenations
  • Regioselective hydroxyalkylation of unsaturated oxime ethers

Reactant for radical reductions of alkyl bromides with N-heterocyclic carbene boranes

Reactant for synthesis of tetramethylammonium trialkylphenylborate salts with oxidation potential
Triethylborane is used as a catalyst for:
  • Allylation of aldehydes
  • Decarboxylative C-C bond cleavage reactions
  • Rhenium hydride / boron Lewis acid cocatalysis of alkene hydrogenations
  • Regioselective hydroxyalkylation of unsaturated oxime ethers


It can be employed as a reactant for radical reductions of alkyl bromides with N-heterocyclic carbene boranes and for the synthesis of tetramethylammonium trialkylphenylborate salts.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Pyr. Liq. 1 - Skin Corr. 1A - STOT SE 3 - Water-react 2

Target Organs

Central nervous system, Respiratory system

Supplementary Hazards

EUH019

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 1

Flash Point(F)

1.4 °F - closed cup

Flash Point(C)

-17 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

179701-100ML:4548173110530
179701-BULK:
179701-VAR:
179701-800ML:4548173110547

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Aerobic Hydroxylation of N-Borylenamine: Triethylborane-Mediated Hydroxyalkylation of α, β-Unsaturated Oxime Ether.
Ueda M, et al.
Organic Letters, 11(20), 4632-4635 (2009)
Synthesis of N-heterocyclic carbene boranes via silver N-heterocyclic carbene complexes.
Ono S, et al.
Polyhedron, 137(20), 296-305 (2017)
Formation of Ketenimines via the Palladium-Catalyzed Decarboxylative π-Allylic Rearrangement of N-Alloc Ynamides.
Alexander, Juliana R and Cook, Matthew J
Organic Letters, 19(21), 5822-5825 (2017)
Rhenium hydride/boron Lewis acid cocatalysis of alkene hydrogenations: Activities comparable to those of precious metal systems.
Jiang, Yanfeng and Hess, Jeannine and Fox, Thomas and Berke, Heinz
Journal of the American Chemical Society, 132(51), 18233-18247 (2010)
Synthesis of tetramethylammonium phenyltrialkylborate salts by the addition of alkyllithium reagents to a triorganylborane or organoboranylhalides.
Pietrzak, Marek and J
Journal of Organometallic Chemistry, 696(10), 2135-2141 (2011)
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