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60435

Sigma-Aldrich

Potassium tert-pentoxide solution

technical, ~25% in toluene (T, ~1.7 M)

Synonym(s):

Potassium (2-methyl-2-butoxide), Potassium tert-pentylate

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About This Item

Linear Formula:
CH3CH2C(CH3)2OK
CAS Number:
41233-93-6
Molecular Weight:
126.24
Beilstein:
4149025
MDL number:
MFCD00064808
UNSPSC Code:
12352001
PubChem Substance ID:
57651765
NACRES:
NA.22

grade

technical

Quality Level

200

concentration

~25% in toluene (T, ~1.7 M)

density

0.90 g/mL at 20 °C

SMILES string

[K+].CCC(C)(C)[O-]

InChI

1S/C5H11O.K/c1-4-5(2,3)6;/h4H2,1-3H3;/q-1;+1

InChI key

ZRLVQFQTCMUIRM-UHFFFAOYSA-N

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Application

Potassium tert-pentoxide solution has been used as a base to synthesize [RuClPh(CO)(H2IMes)(PCy3)] from second-generation Grubbs metathesis catalyst, [RuCl2(=CHPh)(H2IMes)(PCy3)], (where H2IMes is 1,3-dimethyl-4,5-dihydroimidazol-2-ylidene and PCy3 is tricyclohexylphosphine) and benzyl alcohol. This complex is a solid, air-stable and highly active isomerization catalyst.

Caution

may crystallize; can be redissolved on heating to approx. 30°C

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 3 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Repr. 2 - Skin Corr. 1B - STOT RE 2 - STOT SE 3

Target Organs

Central nervous system

Supplementary Hazards

EUH014

WGK

WGK 3

Flash Point(F)

39.2 °F

Flash Point(C)

4 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

易制毒化学品（3类）
危险化学品

Certificates of Analysis (COA)

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Degradation of the Second?Generation Grubbs Metathesis Catalyst with Primary Alcohols and Oxygen? Isomerization and Hydrogenation Activities of Monocarbonyl Complexes.
Dinger MB
European Journal of Inorganic Chemistry, 2003(15), 2827-2833 (2003)

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