2-ETHYNYLTOLUENE 97

Base Information

• Chemical Name: 2-ETHYNYLTOLUENE 97
• CAS No.: 766-47-2
• Molecular Formula: C9H8
• Molecular Weight: 116.163
• Hs Code.: 2902909090
• Mol file: 766-47-2.mol

Synonyms:Toluene,o-ethynyl- (6CI,7CI,8CI); (2-Methylphenyl)acetylene; (2-Methylphenyl)ethyne;(o-Methylphenyl)acetylene; 1-Ethynyl-2-methylbenzene; 2-Ethynyltoluene;2-Tolylacetylene; o-Tolylacetylene

Chemical Property of 2-ETHYNYLTOLUENE 97

Chemical Property:

• Vapor Pressure: 1.93mmHg at 25°C
• Melting Point: 285 °C (decomp)
• Refractive Index: n20/D 1.5470(lit.)
• Boiling Point: 50-60ºC
• Flash Point: 35 ºC
• PSA: 0.00000
• Density: 0.922
• LogP: 1.97630

Purity/Quality:

99% ^*data from raw suppliers

2-Methylphenylacetylene ^*data from reagent suppliers

Safty Information:

• Hazard Codes: Xi
• Statements: 10-36/37/38
• Safety Statements: 16-26-36

MSDS Files:

SDS file from LookChem

Useful:

• Uses: 2-Ethynyltoluene may be used in the synthesis of Ph2N(2-MeC6H4)C=CH2.

Technology Process of 2-ETHYNYLTOLUENE 97

There total 26 articles about 2-ETHYNYLTOLUENE 97 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 91.0%

ortho-methylphenyl iodide (615-37-2) + trimethylsilylacetylene (1066-54-2) → 1-ethynyl-2-methylbenzene (766-47-2) + trimethyl[(2-methylphenyl)ethynyl]silane (3989-15-9)

Guidance literature:

With copper(l) iodide; diethylamine; bis-triphenylphosphine-palladium(II) chloride; at 20 ℃; for 5h;

DOI:10.3390/10101340

Reference yield: 88.0%

phenylacetylene (536-74-3) + methyl iodide (74-88-4) → 1-ethynyl-2-methylbenzene (766-47-2)

Guidance literature:

With n-butyllithium; potassium tert-butylate; In tetrahydrofuran; hexane; at -60 - -50 ℃;

DOI:10.1039/c39810000366

Reference yield: 87.0%

trimethyl[(2-methylphenyl)ethynyl]silane (3989-15-9) → 1-ethynyl-2-methylbenzene (766-47-2)

Guidance literature:

With potassium trimethylsilonate; In dimethyl sulfoxide; at 60 ℃; for 7h; under 760.051 Torr; Reagent/catalyst; Solvent; Catalytic behavior; Sealed tube;

upstream raw materials:

trimethyl[(2-methylphenyl)ethynyl]silane

1-(1-bromovinyl)-2-methylbenzene

methanol

Methyl fluoride

Downstream raw materials:

4-(o-tolyl)but-3-yn-2-one

3-o-tolyl-1-{2-[(trimethylsilyl)ethynyl]phenyl}prop-2-yn-1-ol

2-(1,1-dimethylethyl)-6-(2-methylphenyl)thiapyran-4-one

1-(1,1-dimethylethyl)-5-(2-methylphenyl)-1,4-pentadiyn-3-ol

Refernces

• 1、 Biletskyi, Bohdan,Kong, Lingyu,Tenaglia, Alphonse,Clavier, Hervé. "Cobalt-Catalyzed Hydroalkynylation of Vinylaziridines". supporting information. p. 2578 - 2585. Retrieved 2021/03/18.
• 2、 Guo, Jing,Cheong, Odelia,Bamford, Karlee L.,Zhou, Jiliang,Stephan, Douglas W.. "Frustrated Lewis pair-catalyzed double hydroarylation of alkynes with: N -substituted pyrroles". supporting information. p. 1855 - 1858. Retrieved 2020/02/22.