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10026-11-6 - Zirconium(IV) chloride, 98%, cont. 1-2% hafnium(IV) chloride - Zirconium tetrachloride - L14891 - Alfa Aesar

L14891 Zirconium(IV) chloride, 98%, cont. 1-2% hafnium(IV) chloride

CAS-Nummer
10026-11-6
Synonyme
Zirconium tetrachloride

Größe Preis ($) Menge Verfügbarkeit
50g 21,00
250g 59,60
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Zirconium(IV) chloride, 98%, cont. 1-2% hafnium(IV) chloride

MDL
MFCD00011306
EINECS
233-058-2

Chemische Eigenschaften

Formel
ZrCl4
Molmasse
233.03
Schmelzpunkt
331° subl.
Dichte
2.803
Sensitivität
Moisture Sensitive
Löslichkeit
Reacts with water.

Anwendungen

Zirconium(IV) chloride catalyzes the trans-hydrostannylation of acetylenes with Tri-n-butyl­tin hydride. It is used as a superior catalyst for the fries rearrangement of aryl acetates, giving the least hindered ortho-acetyl phenol in high yields at ambient temperatures. In the presence of ZrCl4, chloromethyl ethers are formed under mild conditions from acid chlorides and trioxane or paraformaldehyde.

Bemerkungen

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Handle and store under inert gas. It is sensitive to moisture. Incompatible with bases and oxidizing agents.

Literaturverweise

Ch.Venkateshwar Reddy.; M Mahesh, P.V.K Raju.; T.Ramesh Babu.; V.V.Narayana Reddy. Zirconium(IV) chloride catalyzed one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones. Tetrahedron Letters. 2002, 43 (14), 2657-2659.

Harish K Patney.; Simon Margan. Zirconium(IV) chloride-silica catalysed thioacetalisation of carbonyl compounds. Tetrahedron Letters. 1996, 37 (26), 4621-4622.

Lewis acid. Promotes the rearrangement of hydroxy sulfones to ketones: J. Chem. Soc., Chem. Commun., 2289 (1994).

Catalyzes the trans-hydrostannylation of acetylenes with Tri-n-butyl­tin hydride, A13298: J. Chem. Soc., Chem. Commun., 2405 (1995); J. Org. Chem., 61, 4568 (1996). Allylstannanes also add trans-selectively to acetylenes under similar conditions: J. Chem. Soc., Chem. Commun., 1513 (1996).

Superior catalyst for the Fries rearrangement of aryl acetates, giving the least hindered ortho-acetyl phenol in high yields at ambient temperatures: Tetrahedron Lett., 37, 7659 (1996).

In the presence of ZrCl4, chloromethyl ethers are formed under mild conditions from acid chlorides and trioxane or paraformaldehyde: Tetrahedron Lett., 43, 6317 (2002).

Highly efficient and reusable catalyst for acetylation of phenols, thiols, amines and alcohols under solvent-free conditions, claimed to be superior to metal triflates: Synlett, 627 (2004).

For a brief feature on uses of this reagent in synthesis, see: Synlett, 1073 (2003).

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H302-H314-H318

Harmful if swallowed. Causes severe skin burns and eye damage. Causes serious eye damage.

Sicherheitshinweise: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a

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. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,10174
Gefahrenklasse
8
Verpackungsgruppe
III
Harmonized Tariff Code
2827.39
TSCA
Yes
RTECS
ZH7175000

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