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41233-93-6 - Potassium tert-pentyloxide, 25% w/w in toluene - Potassium tert-amylate - Potassium tert-pentylate - L15111 - Alfa Aesar

L15111 Potassium tert-pentyloxide, 25% w/w in toluene

Codice CAS
41233-93-6
Sinonimi
Potassium tert-amylate
Potassium tert-pentylate

Dimensioni Prezzo ($) Quantità Disponibilità
250ml 62,60
1000ml 188,00
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Potassium tert-pentyloxide, 25% w/w in toluene

MDL
MFCD00064808
EINECS
255-272-5

Proprietà chimiche

Formula
C5H11KO
Peso formula
126.24
Punto di infiammabilità
4°(39°F)
Densità
0.870
Sensibilità
Air & Moisture Sensitive

Applicazioni

Potassium tert-pentyloxide is a strong, hindered base used in combination with lithium diisopropyl amide to generate a superbase for the selective metallation of the aralkyl system at the 6-position of protected estradiols. It is used in organic synthesis, agrochemicals, pharmaceuticals, colorants and aroma chemicals. It acts as a catalyst in polymerization and isomerizations.

Note

Air and moisture sensitive. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents and acids. Reacts violently with water.

Letteratura

Strong, hindered base, soluble in hydrocarbon solvents: J. Am. Chem. Soc., 108, 1306 (1987). Has been used in combination with LDA to generate a superbase for the selective metallation of the aralkyl system at the 6-position of protected estradiols: Synthesis, 1493 (1995).

Halasa, A. F.; Seo, K. S. Anionic solution copolymerization of α-methylstyrene with conjugated dienes above the ceiling temperature of alfa-methylstyrene. Eur. Polym. J. 2014, 51, 80-86.

Liu, W.; Xu, L. Ligand-controlled chemoselectivity in potassium tert-amylate-promoted direct C-H arylation of unactivated benzene with aryl halides. Tetrahedron 2014, 71 (30), 4974-4981.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H225-H302-H333-H314-H318-H361-H336-H373-H304

Highly flammable liquid and vapour. Harmful if swallowed. May be harmful if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. Suspected of damaging fertility or the unborn child. May cause drowsiness or dizziness. May cause damage to organs through prolonged or repeated exposure. May be fatal if swallowed and enters airways.

Dichiarazioni precauzionali: P210-P301+P310a-P303+P361+P353-P305+P351+P338-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF SWALLOWED: IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
4149025
Classe di rischio
3
Gruppo di imballaggio
II
Codice tariffe armonizzato
2905.19
TSCA
Yes

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