5,7-dichloro-2,3-dihydrothieno3,4-b1,4dioxine

Base Information

• Chemical Name: 5,7-dichloro-2,3-dihydrothieno3,4-b1,4dioxine
• CAS No.: 225518-49-0
• Molecular Formula: C₆H₄Cl₂O₂S
• Molecular Weight: 211.069
• Mol file: 225518-49-0.mol

Synonyms:2,5-Dichloro-3,4-ethylenedioxythiophene

Chemical Property of 5,7-dichloro-2,3-dihydrothieno3,4-b1,4dioxine

Chemical Property:

• Melting Point: 65.0 to 69.0 °C
• PSA: 46.70000
• LogP: 2.82610
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C

Purity/Quality:

98% ^*data from raw suppliers

5,7-Dichloro-2,3-dihydrothieno[3,4-b][1,4]dioxine ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: 5,7-Dichloro-2,3-dihydrothieno[3,4-b][1,4]dioxine is used as a reactant in the synthesis of polyethylenedioxythiophene.

Technology Process of 5,7-dichloro-2,3-dihydrothieno3,4-b1,4dioxine

There total 1 articles about 5,7-dichloro-2,3-dihydrothieno3,4-b1,4dioxine 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: 82.0%

3,4-(ethylenedioxy)thiophene (126213-50-1) → 2,5-dichloro-3,4-ethylenedioxythiophene (225518-49-0)

Guidance literature:

With N-chloro-succinimide; In tetrahydrofuran; acetic acid; at 0 - 20 ℃; for 16h; Inert atmosphere;

DOI:10.1002/anie.201308462

Reference yield:

phenylmagnesium bromide (100-58-3) + 2,5-dichloro-3,4-ethylenedioxythiophene (225518-49-0) → C12H9ClO2S + 5,7-diphenyl-2,3-dihydrothieno[3,4-b][1,4]-dioxine

Guidance literature:

With dichloro(1,3-bis(2,6-bis(3-pentyl)phenyl)imidazolin-2-ylidene)(3-chloropyridyl)palladium(II); In tetrahydrofuran; at 50 ℃; for 3h; Overall yield = 86 %Spectr.; chemoselective reaction; Inert atmosphere;

DOI:10.1039/c4cc08920k

upstream raw materials:

3,4-(ethylenedioxy)thiophene

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