DI-P-TOLYLACETYLENE

Base Information

• Chemical Name: DI-P-TOLYLACETYLENE
• CAS No.: 2789-88-0
• Molecular Formula: C16H14
• Molecular Weight: 206.287
• Hs Code.: 2902909090
• Mol file: 2789-88-0.mol

Synonyms:HMS553O18;1,2-bis[4-methylphenyl]ethyne;1,2-di(4-methylphenyl)ethyne;1,2-bis(4-methylphenyl)acetylene;bis(p-tolyl)acetylene;di-p-Tolylacetylene;1,2-di-p-tolylethyne;

Chemical Property of DI-P-TOLYLACETYLENE

Chemical Property:

• Melting Point: 118-134 °C(Solv: ligroine (8032-32-4))
• Boiling Point: 327.7oC at 760 mmHg
• Flash Point: 144.8oC
• PSA: 0.00000
• Density: 1.03g/cm3
• LogP: 3.70320

Purity/Quality:

99%, ^*data from raw suppliers

DI-p-tolylacetylene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of DI-P-TOLYLACETYLENE

There total 118 articles about DI-P-TOLYLACETYLENE 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: 99.0%

4-tolyl iodide (624-31-7) + calcium carbide (75-20-7) → 1,2-bis(4-methylphenyl)acetylene (2789-88-0)

Guidance literature:

With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine; In acetonitrile; at 20 ℃; Inert atmosphere;

DOI:10.1016/j.tet.2011.08.042

Reference yield: 99.0%

4-methylphenylboronic acid (5720-05-8) + 4-n-methylphenylacetylene (766-97-2) → 1,2-bis(4-methylphenyl)acetylene (2789-88-0)

Guidance literature:

With sodium perchlorate; palladium diacetate; 1,8-diazabicyclo[5.4.0]undec-7-ene; 2,2,6,6-tetramethyl-4-benzoyloxypiperidine-1-oxide; In water; acetonitrile; at 20 ℃; Inert atmosphere; Electrochemical reaction;

DOI:10.1039/c0cc02633f

Reference yield: 96.0%

1-methyl-4-(1-propyn-1-yl)benzene (2749-93-1) → 1,2-bis(4-methylphenyl)acetylene (2789-88-0)

Guidance literature:

With [PhC≡W{OC(CF₃)Me₂}₃]; In toluene; at 25 ℃; for 2h; Reagent/catalyst; Inert atmosphere; Molecular sieve; Glovebox;

DOI:10.3762/bjoc.14.220

upstream raw materials:

4,4'-(2-chloroethene-1,1-diyl)bis(methylbenzene)

sodium ethanolate

1,1-dichloro-2,2-bis(p-methylphenyl)ethane

Methylchlor

Downstream raw materials:

1,1,4,4-tetramethyl-2,3,5,6-tetra-p-tolyl-1,4-dihydro-[1,4]disiline

trans-1,2-Bis-<4'-methoxy-stilben-4-yl>-acetylen

1-(2-furyl)-1,2-bis(p-tolyl)ethylene

ethyl 2,3-di-p-tolylcycloprop-2-ene-1-carboxylate

Refernces

• 1、 Collet,A.,Jacques,J.. "-". . p. 38 - 39. Retrieved 1972.
• 2、 Bolm, Carsten,Van Bonn, Pit. "Mechanochemical Synthesis of Diarylethynes from Aryl Iodides and CaC 2". supporting information. . Retrieved 2022/02/25.
• 3、 Ma, Xiaolong,Li, Zheng. "Synthesis of Diarylethynes from Aryldiazonium Salts by Using Calcium Carbide as an Alkyne Source in a Deep Eutectic Solvent". supporting information. p. 631 - 635. Retrieved 2020/12/28.