| Identification | More | [Name]
Allyltrimethylsilane | [CAS]
762-72-1 | [Synonyms]
3-TRIMETHYLSILYL-1-PROPENE
3-(TRIMETHYLSILYL)PROPENE
ALLYLTRIMETHYLSILANE
TMS-ALLYL
TRIMETHYLALLYLSILANE
allytrimethylsilane
CA0570
Silane, allyltrimethyl-
Silane,trimethyl-2-propenyl-
trimethyl-2-propenyl-silan
trimethyl-2-propenyl-Silane
Allyltrimethylisilane
trimethyl-prop-2-enyl-silane
Allyltrimethylsilane(3-trimethylsilyl-1-propene)99%available
Allyltrimethylsilane, 98+% | [EINECS(EC#)]
212-104-5 | [Molecular Formula]
C6H14Si | [MDL Number]
MFCD00008635 | [Molecular Weight]
114.26 | [MOL File]
762-72-1.mol |
| Chemical Properties | Back Directory | [Appearance]
clear colourless liquid | [Boiling point ]
84-88 °C (lit.) | [density ]
0.719 g/mL at 25 °C(lit.)
| [vapor pressure ]
82hPa@25°C | [refractive index ]
n20/D 1.407(lit.)
| [Fp ]
45 °F
| [storage temp. ]
0-6°C | [solubility ]
freely sol all organic solvents. | [form ]
Liquid | [color ]
Clear colorless | [Specific Gravity]
0.72 | [Water Solubility ]
insoluble | [Hydrolytic Sensitivity]
2: reacts with aqueous acid | [BRN ]
906755 | [Stability:]
Volatile | [InChIKey]
HYWCXWRMUZYRPH-UHFFFAOYSA-N | [LogP]
4.64 at 20℃ | [CAS DataBase Reference]
762-72-1(CAS DataBase Reference) | [NIST Chemistry Reference]
Silane, trimethyl-2-propenyl-(762-72-1) | [EPA Substance Registry System]
762-72-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xi | [Risk Statements ]
R11:Highly Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S33:Take precautionary measures against static discharges .
S7/9:Keep container tightly closed and in a well-ventilated place . | [RIDADR ]
UN 1993 3/PG 2
| [WGK Germany ]
3
| [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29310095 |
| Hazard Information | Back Directory | [Chemical Properties]
clear colourless liquid | [Uses]
Allyltrimethylsilane is a general reagent to introduce allyl groups across acid chlorides, aldehydes, ketones, iminium ions, enones, and for cross-coupling with other carbon electrophiles. It is used as a reagent in Hosomi?Sakurai reaction. | [Application]
Allyltrimethylsilane is used in the allylation of aldehydes, imines, allylic and benzylic alcohols, and chiral α-keto-amides that are derived from (S)-proline esters. | [Preparation]
Allyltrimethylsilane is synthesized by the reaction of trimethylchlorosilane and allylmagnesium bromide. | [Reactions]
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.
As a Carbon Nucleophile in Lewis Acid-Catalyzed Reactions.
Allyltrimethylsilane is an alkene some 10 times more nucleophilic than propene, as judged by its reactions with diarylmethyl cations.It reacts with a variety of cationic carbon electrophiles, usually prepared by coordination of a Lewis acid to a functional group, but also by chemical or electrochemical oxidation,or by irradiation in the presence of 9,10- dicyanoanthracene.
carbon to give an intermediate cation, and the silyl group is lost to create a double bond at the other terminus. Among the more straightforward electrophiles are acid chlorides (eq 1).
As a Carbon Nucleophile in Fluoride Ion-Catalyzed Reactions.
The reactions with aldehydes, ketones (eq 23),54 and α,β-unsaturated esters (eq 24)55 can also be catalyzed by fluoride ion, usually introduced as tetra-n-butylammonium fluoride (TBAF), or other silicophilic ions such as alkoxide. These reactions produce silyl ether intermediates, which are usually hydrolyzed before workup. The stereochemistry of attack on chiral ketones can sometimes be different for the Lewis acid- and fluoride ion-catalyzed reactions.
Other Reactions.
Allyltrimethylsilane reacts with some highly electrophilic alkenes, carbonyl compounds, azo compounds, and singlet oxygen to a greater or lesser extent in ene reactions that do not involve the loss of the silyl group, and hence give vinylsilanes in a solvent-dependent reaction. | [Flammability and Explosibility]
Flammable(100%) | [Synthesis]
Preparation of allyl magnesium bromide Grignard reagent: Put magnesium and anhydrous ether into a 100OL reactor, heat to about 34°C, use a metering tank to pump a certain amount of 3-bromopropylene into the reactor, control the temperature at about 54°C and react for 4 hours. Preparation of allyl trimethylsilane: After the previous reaction, pump a certain amount of trimethyl chlorosilane into the reactor, control the temperature at about 54°C and react for 4 hours. Then, atmospheric distillation, and the distillate above 45°C, is the pure product. | [Purification Methods]
Fractionate it through an efficient column at atmospheric pressure. If impure, dissolve it in THF, shake it with H2O (2x), dry (Na2SO4), filter and fractionate it. [Cudlin & Chvalovsky′ Collect Czech Chem Commun 27 1658 1962, Beilstein 4 IV 3927.] |
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