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4568-71-2 - 3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride, 98% - L08750 - Alfa Aesar

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

CAS-Nummer
4568-71-2
Synonyme

Größe Preis ($) Menge Verfügbarkeit
25g 41,41
100g 127,72
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3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chloride, 98%

MDL
MFCD00011959
EINECS
224-947-6

Chemische Eigenschaften

Formel
C13H16ClNOS
Molmasse
269.80
Schmelzpunkt
142-145°
Sensitivität
Hygroscopic
Löslichkeit
Soluble in water.

Anwendungen

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.

Bemerkungen

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

Literaturverweise

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.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

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

Sicherheitshinweise: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/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. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Beilstein
3788921
Harmonized Tariff Code
2934.10
TSCA
No

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