5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine

Base Information

• Chemical Name: 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine
• CAS No.: 1357600-11-3
• Molecular Formula: C₃₄H₃₂N₂S₃
• Molecular Weight: 564.839
• Mol file: 1357600-11-3.mol

Synonyms:5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine

Chemical Property of 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine

There total 2 articles about 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine 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: 68.0%

3,4:3'',4''-tetraethyl-3'4'-diamino-2,2':5',2''-terthiophene (1357600-06-6) + benzil (134-81-6) → 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine (1357600-11-3)

Guidance literature:

In methanol; at 70 ℃; for 12h; Inert atmosphere;

DOI:10.1039/c2jm13285k

Reference yield:

3,4:3'',4''-tetraethyl-3'4'-dinitro-2,2':5',2''-terthiophene (1357600-05-5) → 5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine (1357600-11-3)

Guidance literature:

Multi-step reaction with 2 steps

1: palladium 10% on activated carbon; hydrazine hydrate / ethanol / 2 h / Inert atmosphere

2: methanol / 12 h / 70 °C / Inert atmosphere

With palladium 10% on activated carbon; hydrazine hydrate; In methanol; ethanol;

DOI:10.1039/c2jm13285k

Reference yield: 85.0%

5,7-bis(3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine (1357600-11-3) → 5,7-bis(5-bromo-3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine (1357600-12-4)

Guidance literature:

With N-Bromosuccinimide; acetic acid; In chloroform; at 0 - 20 ℃; for 1h; Darkness; Inert atmosphere;

DOI:10.1039/c2jm13285k

upstream raw materials:

3,4:3'',4''-tetraethyl-3'4'-dinitro-2,2':5',2''-terthiophene

3,4:3'',4''-tetraethyl-3'4'-diamino-2,2':5',2''-terthiophene

benzil

Downstream raw materials:

5,7-bis(5-bromo-3,4-diethylthien-2-yl)-2,3-diphenylthieno[3,4-b]pyrazine

5,7-bis(5'-(1,3-dioxolan-2-yl)-3,4-diethyl-2,2'-bithien-5-yl)-2,3-diphenylthieno[3,4-b]pyrazine

5',5''-(2,3-diphenylthieno[3,4-b]pyrazine-5,7-diyl)bis(3',4'-diethyl-2,2'-bithiophene-5-carbaldehyde)

2,2'-(5',5''-(2,3-diphenylthieno[3,4-b]pyrazine-5,7-diyl)bis(3',4'-diethyl-2,2'-bithien-5',5-diyl))bis(methan-1-yl-1-ylidene)dimalononitrile