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558893 Sigma-Aldrich

1-Ethyl-4-ethynylbenzene

98%

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Properties

Related Categories Alkynes, Building Blocks, Chemical Synthesis, Organic Building Blocks, Terminal More...
InChI Key   ZNTJVJSUNSUMPP-UHFFFAOYSA-N
assay   98%
refractive index   n20/D 1.5420 (lit.)
bp   30 °C/0.05 mmHg(lit.)
density   0.930 g/mL at 25 °C (lit.)

Description

General description

1-Ethyl-4-ethynylbenzene undergoes homocoupling reaction in the presence of copper(I) chloride (catalyst) and air (oxidant) to yield symmetrical 1,4-disubstituted 1,3-diyne.

Application

1-Ethyl-4-ethynylbenzene may be used to synthesize:
• 2,4-bis[(4-ethylphenyl)ethynyl]-6-methoxy-1,3,5-triazine
• 2-[(4-ethylphenyl)ethynyl]-4-methoxy-6-(phenylethynyl)-1,3,5-triazine
• 2-chloro-4-[(4-ethylphenyl)ethynyl]-6-methoxy-1,3,5-triazine
• 4-chloro-6-[(4-ethylphenyl)ethynyl]-N,N-diphenyl-1,3,5-triazin-2-amine

Packaging

5 g in glass bottle

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
RIDADR 
UN 3334
WGK Germany 
3
Flash Point(F) 
159.8 °F
Flash Point(C) 
71 °C

Documents

Certificate of Analysis

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Protocols & Articles

Articles

New Aromatic Terminal Alkynes

The terminal alkyne functionality has a wide range of applications including most recently the synthesis of spiropyran substituted 2,3-dicyanopyrazines1 and (±)-asteriscanolide,2 as well as conversio...
Chemfiles Volume 3 Article 5
Keywords: Applications, Medicinal chemistry, Organic synthesis

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Alkynes and Acetylenic Building Blocks

We list over 600 alkyne building blocks, including a wide array of propargyl alcohols, acetylenic boron reagents, and halogenated substrates for cross-coupling. Additionally, many of these are termin...
Keywords: Building blocks, Coupling reactions, Cross couplings

Peer-Reviewed Papers
15

References

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