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56-35-9 - Bis(tri-n-butyltin) oxide, 97% - Hexabutyl distannoxane - Tri-n-butyltin oxide - A13242 - Alfa Aesar

A13242 Bis(tri-n-butyltin) oxide, 97%

Codice CAS
56-35-9
Sinonimi
Hexabutyl distannoxane
Tri-n-butyltin oxide

Dimensioni Prezzo ($) Quantità Disponibilità
100g 32,60
500g 107,00
2500g 472,00
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Bis(tri-n-butyltin) oxide, 97%

MDL
MFCD00009418
EINECS
200-268-0

Proprietà chimiche

Formula
C24H54OSn2
Peso formula
596.07
Punto di fusione
-45°
Punto di ebollizione
179-180°/2mm
Punto di infiammabilità
168°(334°F)
Densità
1.172
Indice di rifrazione
1.4865
Solubilità
Soluble in water (0.071 g/L)

Applicazioni

Bis(tri-n-butyltin) oxide is employed in the synthesis of α,β-unsaturated methyl ketones, isoxazoles.

Note

Store at room temperature. Incompatible with oxidizing agents. Ensure adequate ventilation.

Letteratura

E.I. Krajnc.; P.W. Wester.;J.G. Loeber.; F.X.R. van Leeuwen.; J.G. Vos.; H.A.M.G. Vaessen.; C.A. van der Heijden. Toxicity of bis(tri-n-butyltin)oxide in the rat: I. Short-term effects on general parameters and on the endocrine and lymphoid systems. Toxicol. Appl. Pharmacol. 1984, 75 (3),363-386 .

J.G. Vos.; A.De Klerk.; E.I. Krajnc.; H.Van Loveren.; J. Rozing. Immunotoxicity of Bis(tri-n-butyltin)oxide in the rat: Effects on thymus-dependent immunity and on nonspecific resistance following long-term exposure in young versus aged rats. Toxicol. Appl. Pharmacol. 1990, 105 (1),144-155 .

Reacts with alcohols to give tri-n-butylstannyl ethers which, for simple alcohols, are very susceptible to hydrolysis: Synthesis, 56 (1969); J. Organomet. Chem., 110, C57 (1976). In combination with bromine or NBS, allylic, benzylic and secondary alcohols are oxidized to carbonyl compounds, enabling the selective oxidation of secondary, in the presence of primary, alcohols: Bull. Chem. Soc. Jpn., 49, 1656 (1976); Tetrahedron Lett., 4597 (1976); J. Am. Chem. Soc., 98, 1629 (1976). Similarly, sulfides give sulfoxides with no over-oxidation to sulfones: Tetrahedron Lett., 2413 (1977).

Reacts with terminal alkynes to give alkynyl tin reagents. Where these reagents have electron-withdrawing substituents, they undergo regioselective cycloaddition with 1,3-dienes: Tetrahedron, 45, 1145 (1989):

Converts thioamides to nitriles, as does Di-n-butyl­tin oxide, L14491: J .Org. Chem., 47, 4594 (1982).

Reagent for mild, selective non-hydrolytic deprotection of esters: Tetrahedron Lett., 32, 4239 (1991); J. Org. Chem., 59, 7259 (1994); Tetrahedron Lett., 36, 3311 (1995).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H301-H311-H315-H319-H360-H372

Toxic if swallowed. Toxic in contact with skin. Causes skin irritation. Causes serious eye irritation. May damage fertility or the unborn child. Causes damage to organs through prolonged or repeated exposure.

Dichiarazioni precauzionali: P273-P280-P309-P310a-P501a

Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. IF exposed or if you feel unwell: Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
745057
Classe di rischio
6.1
Gruppo di imballaggio
III
Codice tariffe armonizzato
2931.20
TSCA
Yes
RTECS
JN8750000

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