56088-28-9

Basic information

• Product Name: Thieno[2,3-b]pyrazine
• Synonyms: Thieno[2,3-b]pyrazine
• CAS NO: 56088-28-9
• Molecular Formula: C6H4N2S
• Molecular Weight: 136.18
• Mol File: 56088-28-9.mol
• Article Data: 2

Chemical Properties

• Melting Point: 43-44.5 °C
• Boiling Point: 241.407°C at 760 mmHg
• Flash Point: 104.409°C
• Appearance: /
• Density: 1.369g/cm³
• Vapor Pressure: 0.056mmHg at 25°C
• Refractive Index: 1.705
• Storage Temp.: Keep in dark place,Sealed in dry,Room Temperature
• PKA: 0.44±0.30(Predicted)
• CAS DataBase Reference: Thieno[2,3-b]pyrazine(CAS DataBase Reference)
• NIST Chemistry Reference: Thieno[2,3-b]pyrazine(56088-28-9)
• EPA Substance Registry System: Thieno[2,3-b]pyrazine(56088-28-9)

Safety Data

• Hazardous Substances Data: 56088-28-9(Hazardous Substances Data)

Usage

General Description

Thieno[2,3-b]pyrazine, also known as thieno[2,3-b][1,5]pyrazine, is a heterocyclic organic compound composed of a pyrazine ring fused with a thiophene ring. Thieno[2,3-b]pyrazine is known for its unique structure and is found in a variety of applications mostly in research field. Due to its specific ring structure, thieno[2,3-b]pyrazine displays unique electronic features that make it an attractive building block in the construction of various organic electronic materials, particularly in the field of organic light-emitting diodes and photovoltaics. However, it's not extensively studied and warrants more research for further potential uses.

InChI:InChI=1/C6H4N2S/c1-4-9-6-5(1)7-2-3-8-6/h1-4H

Upstream product

• 2882-20-4 2-methyl-3-(methylthio)pyrazine 
• 120-94-5 1-Methylpyrrolidine 
• 55557-52-3 2-chloro-3-cyanopyrazine 
• 56881-21-1 ethyl 7-aminothieno[2,3-b]-pyrazine-6-carboxylate 
• 74990-53-7 (methylthio-2 pyrazinyl-3)-3 dibromo-2,3 propenoate d'ethyl 
• 59944-79-5 thieno[2,3-b]pyrazine-6-carboxylic acid 
• 95-58-9 2-chloro-3-methylpyrazine 
• 5271-25-0 methyl-3 mercapto-2 pyrazine 
• 59944-77-3 thieno<2,3-b>pyrazine carboxylate d'ethyle-6 
• 74990-47-9 formyl-2 methylthio-3 pyrazine 
• 74990-48-0 (methylthio-2 pyrazinyl-3)-3 propenoate d'ethyle 

Downstream Products

• 1126824-72-3 7-bromothieno[2,3-b]pyrazine 
• 59944-74-0 Chloro-7 thieno<2,3-b>pyrazine 

Relevant articles and documents

Synthesis method of 7-bromothieno [2, 3-B] pyrazine

The invention provides a preparation method of 7-bromothieno [2, 3-b] [1, 2, 4] thiadiazole. The invention discloses a synthetic method of 2, 3-B] pyrazine. Relating to the organic synthesis field, the preparation method comprises the following steps: reacting 2, 3-dichloropyrazine with 2-methyl-3-butyne-2-ol, cuprous iodide and triethylamine under the catalytic action of tetrakis (triphenylphosphine) palladium to generate 2-methyl-4-(3-chloropyrazine)-3-butyne-2-ol; 2-methyl-4-(3-chloropyrazine)-3-butyne-2-ol reacts with alkali to obtain 2-chloro-3-ethynylpyrazine, 2-chloro-3-ethynylpyrazinereacts with sodium sulfide nonahydrate to generate thieno [2, 3-B] pyrazine, and thieno [2, 3-B] pyrazine further reacts with N-bromosuccinimide to generate 7-bromothieno [2, 3-. The synthesis methodprovided by the invention has the advantages of easily available raw materials, mild reaction conditions, high selectivity, good operability of post-treatment, high yield and easiness in large-scale production.