4,5-diaza-9,9-sporobifluorene

Base Information

• Chemical Name: 4,5-diaza-9,9-sporobifluorene
• CAS No.: 171856-25-0
• Molecular Formula: C23H14N2
• Molecular Weight: 318.378
• Mol file: 171856-25-0.mol

Synonyms:4,5-diaza-9,9-sporobifluorene

Chemical Property of 4,5-diaza-9,9-sporobifluorene

Chemical Property:

• Melting Point: 208-210 °C(Solv: hexane (110-54-3); ethanol (64-17-5))
• Boiling Point: 515.4±45.0 °C(Predicted)
• PKA: 3.66±0.20(Predicted)
• PSA: 25.78000
• Density: 1.36±0.1 g/cm3(Predicted)
• LogP: 4.82010

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-9,9-sporobifluorene

There total 4 articles about 4,5-diaza-9,9-sporobifluorene 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: 84.3%

5-(biphenyl-2-yl)-5H-cyclopenta[1,2-b:5,4-b']dipyridine-5-ol (171856-26-1) → 4,5-diaza-9, 9′-spirobifluorene (171856-25-0)

Guidance literature:

With sulfuric acid; In acetic acid; at 120 ℃; for 8h; Inert atmosphere;

Reference yield: 72.0%

4,5-Diazafluoren-9-one (50890-67-0) + biphenyl-2-ylmagnesium iodide (23533-35-9) → 4,5-diaza-9, 9′-spirobifluorene (171856-25-0)

Guidance literature:

In tetrahydrofuran; diethyl ether; for 12h; Reflux;

DOI:10.1134/S0012500812020103

Reference yield:

4,5-Diazafluoren-9-one (50890-67-0) → 4,5-diaza-9, 9′-spirobifluorene (171856-25-0)

Guidance literature:

Multi-step reaction with 2 steps

1: diethyl ether; tetrahydrofuran / 12 h / Heating

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

With sulfuric acid; acetic acid; In tetrahydrofuran; diethyl ether;

DOI:10.1021/ol050547o

upstream raw materials:

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

4,5-Diazafluoren-9-one

2-Bromobiphenyl

biphenyl-2-ylmagnesium iodide

Downstream raw materials:

2’,7’-dibromo-4,5-diaza-9,9’-spirobifluorene

3-phenyl-4,5-diaza-9,9'-spirobifluorene