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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

Codice CAS
10026-11-6
Sinonimi
Zirconium tetrachloride

Dimensioni Prezzo ($) Quantità Disponibilità
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

Proprietà chimiche

Formula
ZrCl4
Peso formula
233.03
Punto di fusione
331° subl.
Densità
2.803
Sensibilità
Moisture Sensitive
Solubilità
Reacts with water.

Applicazioni

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.

Note

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.

Letteratura

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).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H314-H318-H302

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

Dichiarazioni precauzionali: P260-P280-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310-P301+P312-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. 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. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician. Call a POISON CENTER or doctor/physician if you feel unwell. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Merck
14,10174
Classe di rischio
8
Gruppo di imballaggio
III
Codice tariffe armonizzato
2827.39
TSCA
Yes
RTECS
ZH7175000

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