79887-14-2

Basic information

• Product Name: 4-Ethoxyphenylacetylene
• Synonyms: 1-ETHOXY-4-ETHYNYL-BENZENE;1-ETHOXY-4-ETH-1-YNYLBENZENE;1-ETHYNYL-4-ETHOXYBENZENE;4-ETHOXY-1-ETHYNYL-BENZENE;4'-ETHOXYPHENYL ACETYLENE;4-ETHOXYPHENYLACETYLENE;P-ETHOXYETHYNYLBENZENE;Benzene, 1-ethoxy-4-ethynyl- (9CI)
• CAS NO: 79887-14-2
• Molecular Formula: C₁₀H₁₀O
• Molecular Weight: 146.1858
• Product Categories: Liquid Crystal intermediates
• Mol File: 79887-14-2.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 214.8 °C at 760 mmHg
• Flash Point: 76.2 °C
• Appearance: /
• Density: 0.99 g/cm³
• Vapor Pressure: 0.223mmHg at 25°C
• Refractive Index: 1.5520 to 1.5560
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• CAS DataBase Reference: 4-Ethoxyphenylacetylene(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Ethoxyphenylacetylene(79887-14-2)
• EPA Substance Registry System: 4-Ethoxyphenylacetylene(79887-14-2)

Safety Data

• Hazard Codes: Xn
• Statements: 22
• Hazardous Substances Data: 79887-14-2(Hazardous Substances Data)

Usage

Uses

Intermediates of Liquid Crystals

InChI:InChI=1/C10H10O/c1-3-9-5-7-10(8-6-9)11-4-2/h1,5-8H,4H2,2H3

Upstream product

• 2373-79-7 4-ethoxycinnamic acid 
• 7400-08-0 para-coumaric acid 
• 540-38-5 p-Iodophenol 
• 699-08-1 1-ethoxy-4-iodobenzene 
• 588-96-5 4-bromoethoxybenzene 
• 106-41-2 4-bromo-phenol 
• 499242-44-3 4-(4-ethoxy-phenyl)-2-methyl-but-3-yn-2-ol 
• 196599-73-2 1-ethoxy-4-[2-(trimethylsilyl)ethynyl]benzene 
• 196599-71-0 3-(4-Ethoxy-phenyl)-prop-2-yn-1-ol 

Downstream Products

• 69374-85-2 1,4-bis(4-ethoxyphenyl)buta-1,3-diyne 
• 1315277-25-8 9-bromo-10-(4-ethoxyphenyl)bicyclo[6.2.0]dec-9-ene 
• 1224717-23-0 methyl 4-[(4-ethoxyphenyl)ethynyl]-2-(methoxymethoxy)benzoate 
• 1224717-28-5 1-{6-[2-(4-ethoxyphenyl)ethyl]-1-benzofuran-2-yl}ethanol 
• 1224717-27-4 1-{6-[2-(4-ethoxyphenyl)ethyl]-1-benzofuran-2-yl}ethanone 
• 1224717-26-3 4-[2-(4-ethoxyphenyl)ethyl]-2-hydroxybenzaldehyde 
• 1224717-25-2 4-[2-(4-ethoxyphenyl)ethyl]-2-(methoxymethoxy)benzaldehyde 
• 1224717-24-1 {4-[2-(4-ethoxyphenyl)ethyl]-2-(methoxymethoxy)phenyl}methanol 
• 550310-88-8 4-methylbenzenesulfonic acid 2-[1-(4-ethoxyphenyl)ethylidene]hydrazide 
• 1093252-20-0 N-[1-(4-ethoxyphenyl)-ethylidene]-4-methyl-benzenesulfonamide 
• 1228275-18-0 N-[1-(4-ethoxyphenyl)-ethylidene]-2-methyl-benzenesulfonamide 
• 1186637-62-6 3-chloro-5-((4-ethoxyphenyl)ethynyl)picolinonitrile 
• 221148-26-1 methyl 3-(4-ethoxyphenyl)prop-2-ynoate 

Relevant articles and documents

Preparation and properties of high birefringence phenylacetylene isothiocyanato-based blend liquid crystals

A series of compounds of with high birefringence containing alkoxy–phenylacetylene–isothiocyanato structure were synthesized and characterized. The chemical structures of these compounds were confirmed by FT-IR and 1H-NMR, and transition temperatures and birefringence were measured. One of these compounds with good liquid crystal property and high birefringence was mixed with host liquid crystal to form blend liquid crystal. The effects of the concentration of the compound on phase temperature range, birefringence, resistivity, dielectric anisotropy and photoelectric properties were discussed. The results showed that blend liquid crystal (with 7 wt% compound) exhibited excellent comprehensive performance.

Synthesis of diphenyl-diacetylene-based nematic liquid crystals and their high birefringence properties

We synthesized two series of diphenyl-diacetylene (DPDA)-based materials with alkoxy and alkyl tails of length m (DPDA-OCm and DPDA-Cm, respectively), and measured their nematic-phase birefringence (Δn) as a function of wavelength and temperature. We found that Δn decreases with an increase in m, possibly by a dilution effect of the low-Δn alkyl tail. Further, of the two series, Δn was found to be relatively higher in the DPDA-OCm materials, with the highest value of 0.4 obtained for DPDA-OC1 at 550 nm at 10 °C below the isotropic-to-nematic transition temperature. Further, we observed the temperature dependence for Δn, which is proportional to the order parameter (s). From extrapolation to s = 1 (the perfect orientation state), it is speculated that the DPDA-O moiety has the potential to afford a very large Δn of 0.9. The Royal Society of Chemistry 2012.

Synthesis of Unsymmetrical 1,4-Diarylbutadiynes by Stille Coupling

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