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L08750 3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride, 98%

Codice CAS
4568-71-2
Sinonimi

Stock No. Dimensioni Prezzo ($) Quantità Disponibilità
L08750-14 25g 42,20
L08750-22 100g 130,00
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3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride, 98%

MDL
MFCD00011959
EINECS
224-947-6

Proprietà chimiche

Formula
C13H16ClNOS
Peso formula
269.80
Punto di fusione
142-145°
Storage & Sensitivity
Hygroscopic. Ambient temperatures.
Solubilità
Soluble in water.

Applicazioni

3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride, aliphatic aldehydes undergo the acyloin condensation in the presence of this catalyst and mild base. It acts as a catalyst for the addition of aliphatic and heterocyclic aldehydes to α,β-unsaturated ketones, nitriles and esters.

Note

Hygroscopic. Store away from water and oxidizing agents. Protect from humidity and water. Incompatible with strong oxidizing agents.

Letteratura

Aliphatic aldehydes undergo the acyloin condensation in the presence of this catalyst and mild base. For example (butyraldehyde to butyroin), see: Org. Synth. Coll., 7, 95 (1990).

The same system is effective in catalyzing the addition of aldehydes to electron-deficient alkenes, including ɑß-unsaturated ketones, esters and nitriles (Stetter reaction), providing a non-toxic alternative to cyanide in these reactions; e.g. in the synthesis of dihydrojasmone: Org. Synth. Coll., 8, 620 (1993):

For reviews, see: Angew. Chem. Int. Ed., 15, 639 (1976); Org. React., 40, 407 (1991). For a further example, see Phenyl­ vinyl­ sulfone, A14794.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Dichiarazioni precauzionali: P261-P280a-P305+P351+P338-P304+P340-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
3788921
Codice tariffe armonizzato
2934.10
TSCA
No

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