873-31-4

Basic information

• Product Name: 1-CHLORO-2-ETHYNYLBENZENE
• Synonyms: 1-CHLORO-2-ETHYNYLBENZENE;2'-CHLOROPHENYL ACETYLENE;2-CHLOROPHENYLACETYLENE;Benzene, 1-chloro-2-ethynyl- (7CI, 8CI, 9CI);2-Chlorophenylacetylene 98%;1-Chloro-2-ethynylbenzene,(2-Chlorophenyl)acetylene;Benzene, 1-chloro-2-ethynyl-;(2-Chlorophenyl)ethyne
• CAS NO: 873-31-4
• Molecular Formula: C₈H₅Cl
• Molecular Weight: 136.58
• EINECS: 1533716-785-6
• Product Categories: Aromatic Halides (substituted);Aromatics Compounds;Aromatics
• Mol File: 873-31-4.mol
• Article Data: 27

Chemical Properties

• Boiling Point: 64-65/15mm
• Flash Point: 70 °C
• Appearance: Clear colorless to yellow/Liquid
• Density: 1.125 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.744mmHg at 25°C
• Refractive Index: n20/D 1.5710(lit.)
• Storage Temp.: Keep Cold
• Solubility: Soluble in hexane.
• Stability: Moisture, Light Sensitive
• CAS DataBase Reference: 1-CHLORO-2-ETHYNYLBENZENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-CHLORO-2-ETHYNYLBENZENE(873-31-4)
• EPA Substance Registry System: 1-CHLORO-2-ETHYNYLBENZENE(873-31-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• Hazardous Substances Data: 873-31-4(Hazardous Substances Data)

Usage

Chemical Properties

Colourless Liquid

Uses

1-Chloro-2-ethynylbenzene may be used in the synthesis of 4-(2-chlorophenylethynyl)-3-methyl-5-phenylisoxazole.

General Description

1-Chloro-2-ethynylbenzene is a chlorinated benzene derivative.

InChI:InChI=1/C8H5Cl/c1-2-7-5-3-4-6-8(7)9/h1,3-6H

Upstream product

• 2142-68-9 1-(2-chlorophenyl)ethanone 
• 89-98-5 2-chloro-benzaldehyde 
• 615-41-8 2-iodochlorobenzene 
• 19819-95-5 2-(2-chlorophenyl)-1-ethanol 
• 90965-06-3 dimethyl 1-(1-diazo-2-oxopropyl)phosphonate 
• 401514-40-7 1-chloro-2-(2,2-dibromovinyl)benzene 
• 694-80-4 2-bromo-1-chlorobenzene 
• 24654-07-7 (2RS,3SR)-2,3-dibromo-3-(2-chlorophenyl)propanoic acid 
• 704-96-1 trans-2-chlorocinnamic acid 
• 187463-09-8 (Z)-1-(2-bromovinyl)-2-chlorobenzene 
• 67-56-1 methanol 
• 105273-33-4 1-chloro-2-(trimethylsilylethynyl)benzene 
• 67-66-3 chloroform 
• 71-43-2 benzene 

Downstream Products

• 10271-57-5 1-chloro-2-(2-phenylethynyl)benzene 
• 479546-79-7 N-[6-(2-chloro-phenylethynyl)-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethyl-propionamide 
• 2142-68-9 1-(2-chlorophenyl)ethanone 
• 478501-26-7 1‐chloro‐2‐((4‐methoxyphenyl)ethynyl)benzene 
• 873961-52-5 2-((2-chlorophenyl)ethynyl)benzaldehyde 
• 105273-33-4 1-chloro-2-(trimethylsilylethynyl)benzene 
• 479546-86-6 N-{6-[2-(2-chloro-phenyl)-ethyl]-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl}-2,2-dimethyl-propionamide 
• 80115-01-1 (5S,8R,9S,10S,13R,14S,17R)-3-(2-Chloro-phenylethynyl)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene 
• 82311-14-6 (5S,8R,9S,10S,13R,14S,17R)-3-[2-(2-Chloro-phenyl)-acetyl]-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-2-one 
• 80115-04-4 (2R,3R,5S,8R,9S,10S,13R,14S,17R)-3-(2-Chloro-phenylethynyl)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[2,3]cyclopenta[a]phenanthrene 
• 1048993-17-4 ethyl 1-{[5-chloro-2-(2-chlorophenyl)-benzofuran-7-yl]methyl}-5-methyl-1H-pyrazole-3-carboxylate 
• 1060695-93-3 PtCl(P(C₆H₅)3)2CHC(SC₆H₄Br)C₆H₄Cl 
• 24654-09-9 ethyl 3-(2-chlorophenyl)prop-2-ynoate 
• 92707-29-4 1-chloro-2-(prop-1-yn-1-yl)benzene 

Relevant articles and documents

Intermolecular [2 + 2] Photocycloaddition of α,β-Unsaturated Sulfones: Catalyst-Free Reaction and Catalytic Variants

2-Aryl-1-sulfonyl-substituted cyclobutanes were prepared in an intermolecular [2 + 2] photocycloaddition from various α,β-unsaturated sulfones and olefins upon irradiation at λ = 300 nm (26 examples, 60-99% yield). Lewis acids catalyzed the [2 + 2] photocycloaddition of 2-benzimidazolyl styryl sulfones. At short wavelengths, the latter substrates underwent C-S bond cleavage but AlBr3 (5 mol %) allowed for an intermolecular reaction with 2,3-dimethyl-2-butene at longer wavelengths. A chiral-at-metal Lewis acid (2 mol %) facilitated an enantioselective reaction (up to 77% ee).

One-Pot Copper-Catalyzed Three-Component Reaction of Sulfonyl Azides, Alkynes, and Allylamines to Access 2,3-Dihydro-1 H-imi-dazo[1,2-a]indoles

A copper-catalyzed multicomponent reaction of sulfonyl azides, alkynes, and allylamines affording 2,3-dihydro-1 H-imidazo-[1,2-a]indoles in moderate yields is reported. Four C-N bonds are constructed- by way of azide-alkyne cycloaddition (CuAAC) and double Ullmann-type coupling reactions in a one-pot process.

Regioselective Gold-Catalyzed Hydration of CF3- and SF5-alkynes

The regioselective gold-catalyzed hydration of CF3- and SF5-alkynes is described. The corresponding trifluoromethylated and pentasulfanylated ketones are obtained in up to 91% yield as single regioisomers showcasing the use of CF3 and SF5 as highly efficient directing groups in this reaction. Notably, this transformation represents the first use of CF3- and SF5-alkynes in gold catalysis.