2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene

Base Information

• Chemical Name: 2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene
• CAS No.: 27192-91-2
• Molecular Formula: C26H12Br4
• Molecular Weight: 643.997
• European Community (EC) Number: 805-910-9
• DSSTox Substance ID: DTXSID30550068
• Nikkaji Number: J2.807.041A
• Wikidata: Q82429281
• Mol file: 27192-91-2.mol

Synonyms:2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene;27192-91-2;2,7-dibromo-9-(2,7-dibromofluoren-9-ylidene)fluorene;2,7,2',7'-Tetrabromo-[9,9']bifluorenylidene;2,2,7,7-Tetrabromo-9,9-bifluorenylidene;SCHEMBL2187975;YSSJ00509;DTXSID30550068;2,7-Dibromo-9-(2,7-dibromo-9H-fluoren-9-ylidene)-9H-fluorene;MFCD22581445;AKOS025295037;CS-0110496;T2759;T72206;2, 7-dibromo-9-(2, 7-dibromofluoren-9-ylidene)fluorene

Chemical Property of 2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene

Chemical Property:

• Melting Point: 455°C(lit.)
• Boiling Point: 655.5±55.0 °C(Predicted)
• PSA: 0.00000
• Density: 1.985±0.06 g/cm3(Predicted)
• LogP: 9.70480
• XLogP3: 8.9
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 643.76315
• Heavy Atom Count: 30
• Complexity: 589

Purity/Quality:

98%,99%, ^*data from raw suppliers

2,2'',7,7''-Tetrabromo-9,9’-bifluoroenylidene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C1=CC2=C(C=C1Br)C(=C3C4=C(C=CC(=C4)Br)C5=C3C=C(C=C5)Br)C6=C2C=CC(=C6)Br
• Uses: 2,2'',7,7''-Tetrabromo-9,9’-bifluoroenylidene (cas# 27192-91-2) is an electron acceptor used in organic electronics and solar cells.

Technology Process of 2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene

There total 11 articles about 2,2',7,7'-Tetrabromo-9,9'-bifluorenylidene 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: 96.0%

C15H10Br2S2 (113425-39-1) → 2,2',7,7'-tetrabromo-9,9'-bifluorenylidene (27192-91-2)

Guidance literature:

With tungsten hexacarbonyl; In chlorobenzene; Heating;

DOI:10.1021/jo00293a037

Reference yield: 50.0%

2,7,9-tribromofluorene (26279-24-3) → 2,2',7,7'-tetrabromo-9,9'-bifluorenylidene (27192-91-2)

Guidance literature:

With 1,8-diazabicyclo[5.4.0]undec-7-ene; In acetonitrile; at 60 ℃; for 2h; Inert atmosphere; Darkness;

DOI:10.1002/anie.200905117

Reference yield: 40.0%

2,7-dibromofluorene-9-one (14348-75-5) → 2,2',7,7'-tetrabromo-9,9'-bifluorenylidene (27192-91-2)

Guidance literature:

With Lawessons reagent; In toluene; at 110 ℃; Inert atmosphere;

DOI:10.1002/anie.201602545

upstream raw materials:

2,7-dibromo-[9,9';9',9'']terfluorene

2,7,2'',7''-tetrabromo-[9,9';9',9'']terfluorene

2,7-dibromo-9-chloro-fluorene

2,7-dibromo-9,9-dichloro-fluorene

Downstream raw materials:

2,7-dibromo-9H-fluorene