5H-dithieno[3,2-b:2',3'-d]pyran-5-one

Base Information

• Chemical Name: 5H-dithieno[3,2-b:2',3'-d]pyran-5-one
• CAS No.: 1295502-12-3
• Molecular Formula: C₉H₄O₂S₂
• Molecular Weight: 208.262
• Mol file: 1295502-12-3.mol

Synonyms:5H-dithieno[3,2-b:2',3'-d]pyran-5-one

Chemical Property of 5H-dithieno[3,2-b:2',3'-d]pyran-5-one

Chemical Property:

• Boiling Point: 387.8±17.0 °C(Predicted)
• Density: 1.570±0.06 g/cm3(Predicted)

Purity/Quality:

99.3% ^*data from raw suppliers

5H-Dithieno[3,2-b:2',3'-d]pyran-5-one 98% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5H-dithieno[3,2-b:2',3'-d]pyran-5-one

There total 13 articles about 5H-dithieno[3,2-b:2',3'-d]pyran-5-one 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: 87.2%

C9H5BrO2S2 → 5H-dithieno[3,2-b:2',3'-d]pyran-5-one (1295502-12-3)

Guidance literature:

With 2-Picolinic acid; copper(l) iodide; sodium carbonate; In dimethyl sulfoxide; at 150 ℃; for 5h; Reagent/catalyst; Inert atmosphere;

Reference yield: 60.0%

[2,2'-bithiophene]-3-carboxylic acid (19783-52-9) → 5H-dithieno[3,2-b:2',3'-d]pyran-5-one (1295502-12-3)

Guidance literature:

With [bis(acetoxy)iodo]benzene; potassium acetate; palladium diacetate; N-acetylglycine; In tert-butyl alcohol; at 120 ℃; for 24h; Schlenk technique;

DOI:10.1002/anie.201501982

Reference yield: 35.0%

4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one (25796-77-4) → 5H-dithieno[3,2-b:2',3'-d]pyran-5-one (1295502-12-3)

Guidance literature:

With sodium perborate tetrahydrate; trifluoroacetic acid; In chloroform; at 20 ℃; for 1h;

upstream raw materials:

4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

[2,2'-bithiophene]-3-carboxylic acid

3-Thiophene carboxylic acid

3-thiophene carboxaldehyde

Downstream raw materials:

5-(3,7-dimethyloctyl)-5-(3-methyloctyl)-5Hdithieno[3,2-b:2',3'-d]pyran

Refernces

• 1、 Liang, Houjie,Zhang, Xingye,Peng, Ruixiang,Ouyang, Xinhua,Liu, Zhiyang,Chen, Shaojie,Ge, Ziyi. "Photovoltaic performance enhancement from diketopyrrolopyrrole-based solar cells through structure manipulation". . p. 145 - 153. Retrieved 2015.
• 2、 -. "Quinoline-based fused ring unit, micro-molecule- based polymer containing same, and preparation method and application thereof (by machine translation)". Paragraph 0108-0111; 0119. . Retrieved 2020/01/25.