4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene

Base Information

• Chemical Name: 4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene
• CAS No.: 198142-63-1
• Molecular Formula: C23H12Br2N2
• Molecular Weight: 476.17
• Mol file: 198142-63-1.mol

Synonyms:4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene

Chemical Property of 4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene

Chemical Property:

• PSA: 25.78000
• LogP: 6.34510

Purity/Quality:

99%, ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene

There total 3 articles about 4,5-Diaza-2',7'-dibroMo-9,9'-spirobifluorene 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: 71.0%

4,5-diaza-9, 9′-spirobifluorene (171856-25-0) → 2’,7’-dibromo-4,5-diaza-9,9’-spirobifluorene (198142-63-1)

Guidance literature:

With iron(III) chloride; bromine; In dichloromethane; at 0 - 20 ℃; for 12h;

DOI:10.1002/cplu.201700105

Reference yield:

4,5-Diazafluoren-9-one (50890-67-0) → 2’,7’-dibromo-4,5-diaza-9,9’-spirobifluorene (198142-63-1)

Guidance literature:

Multi-step reaction with 3 steps

1: diethyl ether; tetrahydrofuran / 12 h / Heating

2: 4.3 g / AcOH; H₂SO₄ / 24 h / Heating

3: 66 percent / Br₂; FeCl₃ / CH₂Cl₂ / 0 °C

With sulfuric acid; bromine; iron(III) chloride; acetic acid; In tetrahydrofuran; diethyl ether; dichloromethane;

DOI:10.1021/ol050547o

Reference yield:

5-(biphenyl-2-yl)-5H-cyclopenta[1,2-b:5,4-b']dipyridine-5-ol (171856-26-1) → 2’,7’-dibromo-4,5-diaza-9,9’-spirobifluorene (198142-63-1)

Guidance literature:

Multi-step reaction with 2 steps

1: 4.3 g / AcOH; H₂SO₄ / 24 h / Heating

2: 66 percent / Br₂; FeCl₃ / CH₂Cl₂ / 0 °C

With sulfuric acid; bromine; iron(III) chloride; acetic acid; In dichloromethane;

DOI:10.1021/ol050547o

upstream raw materials:

4,5-diaza-9, 9′-spirobifluorene

4,5-Diazafluoren-9-one

5-(biphenyl-2-yl)-5H-cyclopenta[1,2-b:5,4-b']dipyridine-5-ol

Downstream raw materials:

4,5-diaza-2',7'-bis(1-naphthyl(phenyl)amino)-9,9'-spirobifluorene

4,5-diaza-2',7'-bis(di-p-tolylamino)-9,9'-spirobifluorene

C₇₅H₇₀N₂

Refernces

• 1、 Keshtov,Pozin,Marochkin,Perevalov,Petrovskii,Blagodatskikh,Khokhlov. "Synthesis and photophysical properties of novel conjugated polymers with 4,5-diaza-9,9′-spirobifluorene fragments in the main chain". experimental part. p. 50 - 56. Retrieved 2012/08/29.