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Ethynyltrimethylsilane

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Origin: China

Cas No: 1066-54-2

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
CAS No.:
1066-54-2
Other Names:
Trimethylsilylacetylene
MF:
C5H10Si
EINECS No.:
213-919-9
Place of Origin:
Shanghai, China
Type:
Pharmaceutical Intermediates
Purity:
99.0%min
Brand Name:
XINGLU
Model Number:
XL-QT122
Application:
Pharm Intermediates
Appearance:
Colorless Transparent Liquid
CAS:
1066-54-2
Color:
Colorless
Boiling point:
53 °C(lit.)
Packaging&Delivery
Packaging Details
Drum/According to customer's requirement.
Port
Main port in China
Lead Time:
Quantity(Kilograms) 1 - 50 51 - 500 501 - 5000 >5000
Est. Time(days) 5 10 20 To be negotiated
Products Description
Product name:

High quality Trimethylsilylacetylene CAS 1066-54-2 with best price

CAS:

1066-54-2

Appearance:

Colorless Transparent Liquid

Purity:

99%

Property

CAS No.: 1066-54-2 Formula: C5H10Si Molecular Weight: 98.21840

Description

Trimethylsilylacetylene is an acetylene molecule protected on one end by the trimethylsilyl group. It is popularly used in alkynylations, e.g. the Sonogashira reaction. After desilylation (e.g. with TBAF), the ethynyl group is introduced. Using a protected alkyne, as opposed to acetylene gas, prevents further (undesired) coupling reactions and also has the benefit of being a liquid.
This compound is commercially available. It may also be prepared in a manner similar to other silyl compounds: deprotonation of acetylene with a Grignard reagent, followed by reaction with trimethylsilyl chloride.

Basic Info

Chemical Name	Ethynyltrimethylsilane
Synonyms	ethynyl(trimethyl)silane; (Trimethylsilyl)Acetylene; TriMethylsilylacetylene;
CAS No.	1066-54-2
Molecular Formula	C5H10Si
Molecular Weight	98.21840
PSA	0.00000
LogP	1.49700

Properties

Appearance & Physical State	clear colorless liquid
Density	0.69
Boiling Point	53ºC
Melting Point	>0ºC
Flash Point	-34ºC
Refractive Index	1.3873-1.3903
Water Solubility	reacts
Stability	Materials containing similar functional groups can decompose at elevated temperatures. Has not been fully evaluated.
Storage Condition	2-8ºC
Vapor Pressure	4.18 psi ( 20 °C)

Safety Info

Hazard Class	3
Safety Statements	S16-S26-S36
HS Code	29310095
WGK Germany	-
Packing Group	II
RIDADR	UN 1993
Risk Statements	R11; R36/37/38
Hazard Codes	F
Symbol	GHS02, GHS07
Signal Word	Danger
Hazard Declaration	H225; H315; H319; H335
Caution Statement	P210; P261; P305 + P351 + P338

Synthesis Route

1-Hexyne+Bis(trimethylsilyl)acetylene→hex-1-ynyl(trimethyl)silane+acetylene
Lithium (trimethylsilyl)acetylide→1,4-Bis(Trimethylsilyl)-1,3-Butadiyne+Ethynyltrimethylsilane
(trimethylsilyl)(dimethylsilyl)ketene→Hexamethylcyclotrisiloxane+octamethylcyclotetrasiloxane

Precursor

lithium acetylide-ethylenediamine complex
(trimethylsilyl)(dimethylsilyl)ketene
acetylene
monosodium acetylide

Downstream Product

4,5-dimethoxy-2-(2-trimethylsilylethynyl)benzaldehyde
tert-butyl 4-(2-trimethylsilylethynyl)benzoate
4,6-dimethyl-2-(2-trimethylsilylethynyl)pyridine-3-carbonitrile
2-(5-bromopyridin-2-yl)ethynyl-trimethylsilane

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