benzo<2,1-b:3,4-b'>bisbenzothiophene

Base Information

• Chemical Name: benzo<2,1-b:3,4-b'>bisbenzothiophene
• CAS No.: 222-24-2
• Molecular Formula: C₁₈H₁₀S₂
• Molecular Weight: 290.409
• Mol file: 222-24-2.mol

Synonyms:

Chemical Property of benzo<2,1-b:3,4-b'>bisbenzothiophene

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of benzo<2,1-b:3,4-b'>bisbenzothiophene

There total 4 articles about benzo<2,1-b:3,4-b'>bisbenzothiophene 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: 35.0%

C20H18O2S2 → benzo[1, 2-b: 4, 5-b']bis[b]benzothiophene (241-34-9) + benzo<2,1-b:3,4-b'>bisbenzothiophene (222-24-2)

Guidance literature:

C₂₀H₁₈O₂S₂; With trifluorormethanesulfonic acid; phosphorus pentoxide; at 20 ℃; for 24h; Inert atmosphere;

With pyridine; for 12h; Reflux;

Reference yield:

[1,1';4',1'']terphenyl (92-94-4,94363-13-0) → benzo[1, 2-b: 4, 5-b']bis[b]benzothiophene (241-34-9) + benzo<2,1-b:3,4-b'>bisbenzothiophene (222-24-2)

Guidance literature:

With sulfur; at 210 ℃; anschl. Erh_. mit Aluminiumchlorid bis auf 260grad;

Reference yield:

1-bromo-2-(methylsulfinyl)benzene (126218-83-5,146235-11-2,7321-58-6) → benzo[1, 2-b: 4, 5-b']bis[b]benzothiophene (241-34-9) + benzo<2,1-b:3,4-b'>bisbenzothiophene (222-24-2)

Guidance literature:

Multi-step reaction with 2 steps

1.1: tetrakis(triphenylphosphine) palladium⁽⁰⁾; potassium carbonate / toluene; water / 24 h / Reflux; Inert atmosphere

2.1: phosphorus pentoxide; trifluorormethanesulfonic acid / 24 h / 20 °C / Inert atmosphere

2.2: 12 h / Reflux

With tetrakis(triphenylphosphine) palladium⁽⁰⁾; trifluorormethanesulfonic acid; phosphorus pentoxide; potassium carbonate; In water; toluene;

upstream raw materials:

[1,1';4',1'']terphenyl

1-bromo-2-(methylsulfinyl)benzene

1,4-Phenyldiboronic acid

Refernces