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346977

(Triethylsilyl)acetylene

97%

Synonym(s):

Ethynyltriethylsilane

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About This Item

Linear Formula:
(C2H5)3SiC≡CH
CAS Number:
1777-03-3
Molecular Weight:
140.30
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24861453
MDL number:
MFCD00075373
Beilstein/REAXYS Number:
1743814
Assay:
97%
Form:
liquid
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Quality Segment

100

assay

97%

form

liquid

refractive index

n20/D 1.433 (lit.)

density

0.783 g/mL at 25 °C (lit.)

SMILES string

CC[Si](CC)(CC)C#C

InChI

1S/C8H16Si/c1-5-9(6-2,7-3)8-4/h1H,6-8H2,2-4H3

InChI key

FWSPXZXVNVQHIF-UHFFFAOYSA-N

General description

(Triethylsilyl)acetylene, a bulky trialkylsilyl-protected alkyne, undergoes Cadiot-Chodkiewicz cross-coupling reaction with various bromoalkynes to yield synthetically useful unsymmetrical diynes. Rhodium-catalyzed dimerization of (triethylsilyl)acetylene has been reported.

Application

(Triethylsilyl)acetylene may be used in the synthesis of triethylsilylethynyl anthradithiophenes, such as :
  • 2,8-dimethyl-5,11-bis(triethylsilylethynyl)ADT (ADT= anthradithiophene)
  • 2,8-diethyl-5,11-bis(triethylsilylethynyl)ADT
  • 2,8-dipropyl-5,11-bis(triethylsilylethynyl)ADT

Storage Class

3 - Flammable liquids

pictograms

Flame
GHS02

signalword

Danger

hcodes

H225

Hazard Classifications

Flam. Liq. 2

wgk

WGK 3

flash_point_f

62.6 °F - closed cup

flash_point_c

17 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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