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60435 Sigma-Aldrich

Potassium tert-pentoxide solution

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

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

  • CAS Number 41233-93-6

  • Linear Formula CH3CH2C(CH3)2OK

  • Molecular Weight 126.24

  •  Beilstein/REAXYS Number 4149025

  •  MDL number MFCD00064808

  •  PubChem Substance ID 57651765

  •  NACRES NA.22

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Properties

Related Categories Acids & Bases, Bases, Chemical Synthesis, Organic Bases, Synthetic Reagents More...
Quality Level   200
grade   technical
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

Description

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.

Packaging

1 L in glass bottle

250 mL in glass bottle

Caution

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

Safety & Documentation

Safety Information

Signal word 
Danger
Target organs 
Central nervous system
Supplemental Hazard Statements 
EUH014
RIDADR 
UN 2924 8(3) / PGII
WGK Germany 
WGK 3
Flash Point(F) 
39.2 °F
Flash Point(C) 
4 °C

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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