758-21-4

Basic information

• Product Name: ETHYLDIMETHYLSILANE
• Synonyms: ETHYLDIMETHYLSILANE;DIMETHYLETHYLSILANE;ethyldimethyl-silan;Dimethylethylsilane,Ethyldimethylsilane;DiMethylethylsilane 98%;Silane, ethyldimethyl-
• CAS NO: 758-21-4
• Molecular Formula: C₄H₁₂Si
• Molecular Weight: 88.22
• EINECS: 212-061-2
• Product Categories: Pharmaceutical Intermediates
• Mol File: 758-21-4.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 44-46 °C(lit.)
• Flash Point: <−30 °F
• Appearance: /
• Density: 0.668 g/mL at 25 °C(lit.)
• Vapor Pressure: 6.05 psi ( 20 °C)
• Refractive Index: n20/D 1.378(lit.)
• BRN: 1730881
• CAS DataBase Reference: ETHYLDIMETHYLSILANE(CAS DataBase Reference)
• NIST Chemistry Reference: ETHYLDIMETHYLSILANE(758-21-4)
• EPA Substance Registry System: ETHYLDIMETHYLSILANE(758-21-4)

Safety Data

• Hazard Codes: F,Xi
• Statements: 11-36/37/38
• Safety Statements: 16-26-33-36-7/9
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 1
• TSCA: Yes
• HazardClass: 3.1
• PackingGroup: I
• Hazardous Substances Data: 758-21-4(Hazardous Substances Data)

Usage

Uses

Dimethylethylsilane can be used as:A reducing agent in the ligand-free carbon-sulfur bond cleavage reaction.A promoter in cycloisomerization of 1,6-dienes using palladium catalyst.

InChI:InChI=1/C4H11Si/c1-4-5(2)3/h4H2,1-3H3

Upstream product

• 6917-76-6 ethyldimethylsilyl chloride 
• 74-85-1 ethene 
• 75-78-5 dimethylsilicon dichloride 
• 1066-35-9 dimethylmonochlorosilane 
• 78-83-1 2-methyl-propan-1-ol 
• 280757-21-3 [3H₃]ethylsilylium ion 
• 557-20-0 diethylzinc 
• 760-32-7 diethylmethylsilane 
• 67-56-1 methanol 
• 1789-58-8 ethyldichlorosilane 
• 676-58-4 methylmagnesium chloride 

Downstream Products

• 18028-01-8 ethyl-dimethyl-phenethyl-silane 
• 5906-73-0 ethyldimethylsilanol 
• 2295-17-2 1,3-diethyltetramethyldisiloxane 
• 93-54-9 1-Phenyl-1-propanol 
• 212915-91-8 [Rh(η5-C5H5)(PPh3)(C6F5)(H)] 
• 914361-23-2 [Rh(η5-C5H5)(PPh3)(H)(SiMe2Et)] 
• 34557-54-5 methane 

Relevant articles and documents

Reactions of diruthenium tetrahydride complex (η5-C5Me5)Ru(μ-H)4 Ru(η5-C5Me5) with vinylsilanes: Formation of a μ-silylene complex via successive Si-H and Si-C bond cleavage of dimethylvinylsilane

The diruthenium complex {Cp*Ru(μ-H)}2{μ-η2:η2- HSiMe2(CH=CH2)} (5a; Cp* = η5-C5-Me5) containing a μ-vinylsilane ligand was prepared by the reaction of Cp*Ru(μ-H)4RuCp* (1) with dimethylvinylsilane. The μ-η2:η2-coordination mode of dimethylvinylsilane was confirmed by means of 1H, 13C, and 29Si NMR and IR spectroscopy. The Si-C(sp2) bond of 5a was readily cleaved upon thermolysis with liberating hydrogen and resulted in formation of the μ-silylene, μ-ethylidyne complex (Cp*Ru)2(μ-SiMe2)(μ-CCH3)(μ-H) (8) via the μ-sily μ-vinyl complex (Cp*Ru)2(μ-η2-HSiMe2) (μ-η2-CH=CH2) (9a) as an intermediate. The reaction of 1 with trimethylvinylsilane rendered cleavage of both Si-C(sp2) and Si-C(sp3) bonds, which resulted in formation of 8. Treatment of 8 with carbon monoxide led to formation of the μ-ethylidene complex by migration of the hydride to the bridging carbon; thus {Cp*Ru-(CO)}2(μ-CHMe)(μ-SiMe2) (10) was obtained. The reaction of 8 with ethylene afforded the μ-vinyl, μ-silylene complex (Cp*Ru)2(μ-η2-CH=CH2) (μ-SiMe2)(μ-H) (CH2=CH2) (11). The reaction of 8 with molecular hydrogen resulted in a re-formation of 1 with liberating dimethylethylsilane, which showed formation of the Si-C bond on the dinuclear system. The molecular structures of 5a, 8, and 10 were determined by single-crystal X-ray diffraction studies.

Ion-molecular reactions of free ethylsilicenium ions with alcohols in the gas phase

Ion-molecular reactions of free ethylsilicenium ions with methanol and isobutanol in the gas phase were studied radiochemically. Within the reaction time the ethylsilicenium ion completely isomerizes into the dimethylsilicenium ion. The reaction mechanism was suggested.