2-Ethynylnaphthalene

Base Information

• Chemical Name: 2-Ethynylnaphthalene
• CAS No.: 2949-26-0
• Molecular Formula: C12H8
• Molecular Weight: 152.196
• Hs Code.: 2902909090
• European Community (EC) Number: 676-241-6
• DSSTox Substance ID: DTXSID50183690
• Nikkaji Number: J325.145D
• Wikidata: Q83054514
• ChEMBL ID: CHEMBL1743361
• Mol file: 2949-26-0.mol

Synonyms:2-ethynylnaphthalene;2-ethynylnaphthalene, 3H-labeled

Chemical Property of 2-Ethynylnaphthalene

Chemical Property:

• Vapor Pressure: 0.0114mmHg at 25°C
• Melting Point: 40.0 to 44.0 °C
• Refractive Index: 1.643
• Boiling Point: 270.4 °C at 760 mmHg
• Flash Point: 106.3 °C
• PSA: 0.00000
• Density: 1.07 g/cm³
• LogP: 2.82110
• Storage Temp.: 2-8°C
• XLogP3: 3.7
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 1
• Exact Mass: 152.062600255
• Heavy Atom Count: 12
• Complexity: 195

Purity/Quality:

97% ^*data from raw suppliers

2-Ethynyl-naphthalene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C#CC1=CC2=CC=CC=C2C=C1

Technology Process of 2-Ethynylnaphthalene

There total 46 articles about 2-Ethynylnaphthalene 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: 100.0%

trimethyl(2-(naphthalen-2-yl)ethynyl)silane (40231-00-3) → 2-ethynylnaphthalene (2949-26-0,123333-47-1)

Guidance literature:

With potassium carbonate; In tetrahydrofuran; methanol; at 0 - 20 ℃; for 12h;

DOI:10.1039/c8cc07380e

Reference yield: 96.4%

2-methyl-4-(naphthalen-2-yl)but-3-yn-2-ol (40888-19-5) → 2-ethynylnaphthalene (2949-26-0,123333-47-1)

Guidance literature:

With potassium hydroxide; In toluene; for 3h; Reflux; Inert atmosphere;

DOI:10.1002/ejoc.201701310

Reference yield: 94.0%

2-(2,2-dibromo-vinyl)-naphthalene (218902-65-9) → 2-ethynylnaphthalene (2949-26-0,123333-47-1)

Guidance literature:

With caesium carbonate; dimethyl sulfoxide; at 115 ℃; for 12h;

DOI:10.1016/j.tetlet.2010.12.071

upstream raw materials:

2-(1-bromo-vinyl)-naphthalene

trimethyl(2-(naphthalen-2-yl)ethynyl)silane

β-Chlor-β-(β-naphthyl)-acrolein

methyl 2-naphthyl ketone

Downstream raw materials:

3-(4-bromo-phenyl)-1-[2]naphthyl-propyne

9-phenyl-9H-xanthene

methyl 2-naphthyl ketone

2-(2-benzenesulfonylmethyl-phenylethynyl)-naphthalene