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762-72-1 - Allyltrimethylsilane, 98+% - A14662 - Alfa Aesar

A14662 Allyltrimethylsilane, 98+%

Número CAS
762-72-1
Nombre Alternativo

Tamaño Precio ($) Cantidad Disponibilidad
10g 40,17
50g 112,27
250g 481,01
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Allyltrimethylsilane, 98+%

MDL
MFCD00008635
EINECS
212-104-5

Propiedades químicas

Fórmula
CH2=CHCH2Si(CH3)3
Peso molecular
114.27
Punto de ebullición
85-86°
Punto de inflamabilidad
-10°(14°F)
Densidad
0.717
Índice de refracción
1.4080
Solubilidad
Miscible with organic solvents. Immiscible with water.

Aplicaciones

Allyltrimethylsilane is involved as a reactant in Hosomi Sakurai reaction for allylation in the presence of Lewis acid. For example, it reacts with cyclohexanone to get 1-allylcyclohexanol. It acts as a nucleophile and is involved in Carbon-Ferrier rearrangement.

Notas

Store in cool place. Incompatible with strong oxidizing agents and acids.

Referencias documentales

Reactions with electrophiles illustrate the ß-effect (see Appendix 4); e.g. acid chlorides with a Lewis acid give allyl ketones: J. Organomet. Chem., 85, 149 (1975):

Similarly, carbonyl compounds are converted to homoallylic alcohols: J. Organomet. Chem., 69, C15 (1974). In the TiCl4 promoted reaction with enones, behaves as an allyl anion equivalent, giving the product of conjugate addition (Hosomi-Sakurai reaction): J. Am. Chem. Soc., 99, 1673 (1977); 105, 2354 (1983); Org. Synth. Coll., 7, 443 (1990):

More recent studies have shown that TMS cyclopentanes are also formed in these reactions via a competing [3+2] cycloaddition mechanism: Tetrahedron, 49, 9955 (1993). Chemoselective addition to aldehydes can be accomplished in the presence of a ketone, using Scandium(III)­ trifluoromethanesulfonate hydrate, 40566 as catalyst: Synthesis, 1822 (1998).

In the presence of F-, functions as an allyl anion equivalent, affording homoallylic alcohols from carbonyl compounds: Tetrahedron Lett., 3043 (1978), and adding to a variety of Michael acceptors: Tetrahedron Lett., 25, 3213 (1984); J. Org. Chem., 51, 1745 (1986). For a review of reactivity in the presence of Lewis acids and F-, see: J. Prakt. Chem./ Chem. Ztg., 336, 375 (1994).

Has also been used, in the presence of a catalyst such as p-TsOH, I2, Br2 or TfOH, as a silylating agent for alcohols, phenols and carboxylic acids: Tetrahedron Lett., 21, 835 (1980); J. Org. Chem., 46, 5212 (1981). The advantage over more conventional silylation methods is that the only by-product is the neutral gas propene.

Srinivas, B.; Reddy, T. R.; Kashyap, S. Ruthenium catalyzed synthesis of 2,3-unsaturated C-glycosides from glycals. Carbohydr Res. 2015, 406, 86-92.

Jayaraman, A.; Jacob, T. V.; Bisskey, J.; Sterenberg, B. T. Sequential electrophilic P-C bond formation in metal-coordinated chlorophosphines. Dalton Trans. 2015, 44 (19), 8788-8791.

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H225-H315-H319-H335

Highly flammable liquid and vapour. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Indicaciones de precaución: P210-P261-P280-P240-P303+P361+P353-P305+P351+P338-P304+P340-P362-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. Ground/bond container and receiving equipment. 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 INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Beilstein
906755
Clase de peligro
3
Grupo de embalaje
II
Código de tarifa arancelaria unificado
2931.90
TSCA
Yes

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