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546-68-9 - Titanium(IV) isopropoxide, 95% - Tetraisopropoxytitanium(IV) - Tetraisopropyl orthotitanate - A13703 - Alfa Aesar

A13703 Titanium(IV) isopropoxide, 95%

Número CAS
546-68-9
Nombre Alternativo
Tetraisopropoxytitanium(IV)
Tetraisopropyl orthotitanate

Tamaño Precio ($) Cantidad Disponibilidad
100g 23,59
500g 59,12
2500g 230,72
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Titanium(IV) isopropoxide, 95%

MDL
MFCD00008871
EINECS
208-909-6

Propiedades químicas

Fórmula
C12H28O4Ti
Peso molecular
284.23
Punto de fusión
16-20°
Punto de ebullición
232°
Punto de inflamabilidad
46°(115°F)
Densidad
0.955
Índice de refracción
1.4640
Sensibilidad
Moisture Sensitive
Solubilidad
Soluble in anhydrous ethanol, ether, benzene and chloroform.

Aplicaciones

Titanium(IV) isopropoxide is used as a precursor for the preparation of titanium and barium-strontium-titanate thin films. It is useful to make porous titanosilicates and potential ion-exchange materials for cleanup of radioactive wastes. It is an active component of sharpless epoxidation as well as involved in the synthesis of chiral epoxides. In Kulinkovich reaction, it is involved as a catalyst in the preparation of cyclopropanes.

Notas

Moisture sensitive. Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents and strong acids. It reacts with water to produce titanium dioxide.

Referencias documentales

Catalyst for transesterification, avoiding acidic or basic conditions. The reaction is carried out such that one alcohol is removed to displace the equilibrium: Synthesis, 138 (1982); Org. Synth. Coll., 8, 201 (1993). For application to carbamates, including Boc to Cbz conversion, see: J. Org. Chem., 62, 7096 (1997).

For use in the Sharpless enantioselective epoxidation of allylic alcohols, see tert-Butyl­ hydroperoxide, A13926. For analogous enantioselective oxidation of sulfides to sulfoxides, see Cumene hydroperoxide, L06866. Epoxy alcohols can also be obtained in high yield in one pot by hydroperoxidation of alkenes with singlet oxygen in the presence of Ti(O-i-Pr)4: J. Am. Chem. Soc., 111, 203 (1989).

Also catalyzes the ring-opening of 2,3-epoxy alcohols (e.g. from the above reactions) with various nucleophiles, including amines, thiols, thiolate anions, halides, carboxylates etc. The mild conditions result in increased regioselectivity: J. Org. Chem., 50, 1557 (1985).

See also Dimethyl­amine hydrochloride, A12133.

For conversion of epoxides to episulfides, see Thiourea, A12828. For use in reductive alkylation of amines, see Sodium cyanoborohydride, 87839. For use in enantioselective synthesis of homoallylic alcohols, see (R)-(+)-1,1'-Bi(2-naphthol)­, L08305. For reduction of amides to aldehydes, see Diphenyl­silane, A10884.

For a brief feature on uses of the reagent, see: Synlett, 2261 (2003).

Khalil, K. M.; El-Khatib, R. M.; Ali, T. T.; Mahmoud, H. A.; Elsamahy, A. A. Titania nanoparticles by acidic peptization of xerogel formed by hydrolysis of titanium(IV) isopropoxide under atmospheric humidity conditions. Powder Technol. 2013, 245, 156-162.

Wanna, N.; Kraithong, T.; Khamnaen, T.; Phiriyawirut, P.; Charoenchaidet, S.; Tantirungrotechai, J. Aluminum-and calcium-incorporated MCM-41-type silica as supports for the immobilization of titanium(IV) isopropoxide in ring-opening polymerization of l-lactide and ε-caprolactone. Catal. Commun. 2014, 45, 118-123.

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H226-H319

Flammable liquid and vapour. Causes serious eye irritation.

Indicaciones de precaución: P210-P280-P240-P241-P233-P242-P303+P361+P353-P305+P351+P338-P403+P235-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves/protective clothing/eye protection/face protection. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Keep container tightly closed. Use only non-sparking tools. 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. Store in a well-ventilated place. Keep cool. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Merck
14,9480
Beilstein
3679474
Clase de peligro
3
Grupo de embalaje
III
Código de tarifa arancelaria unificado
2905.19
TSCA
Yes
RTECS
NT8060000

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