ChemicalBook > CAS DataBase List > 4,5-DIAZAFLUOREN-9-ONE

4,5-DIAZAFLUOREN-9-ONE

Product Name
4,5-DIAZAFLUOREN-9-ONE
CAS No.
50890-67-0
Chemical Name
4,5-DIAZAFLUOREN-9-ONE
Synonyms
Dafo;5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one;AKOS BBS-00000188;4,5-DIAZAFLUOREN-9-O;4,5-DIAZAFLUOREN-9-ONE;4,5-Diaza-9-fluorenone;4,5-DIAZAFLUORENE-9-ONE;4,5-Diaza-9H-fluoren-9-one;4,5-Diazafluoren-9-one 97%;4,5-Diazafluoren-9-one, 98+%
CBNumber
CB0479035
Molecular Formula
C11H6N2O
Formula Weight
182.18
MOL File
50890-67-0.mol
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4,5-DIAZAFLUOREN-9-ONE Property

Melting point:
214-217 °C (lit.)
Boiling point:
396.3±17.0 °C(Predicted)
Density 
1.387±0.06 g/cm3(Predicted)
storage temp. 
Sealed in dry,Room Temperature
solubility 
Soluble in dichloromethane, tetrahydrofuran, chloroform, benzene, toluene and polar organic solvents. Insoluble in diethyl ether and alkanes.
form 
powder to crystal
pka
1.22±0.20(Predicted)
color 
Light yellow to Yellow to Orange
λmax
340nm(H2O)(lit.)
InChIKey
PFMTUGNLBQSHQC-UHFFFAOYSA-N
CAS DataBase Reference
50890-67-0
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39
WGK Germany 
3
HS Code 
29333990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
379344
Product name
4,5-Diazafluoren-9-one
Purity
97%
Packaging
1g
Price
$257
Updated
2025/07/31
TCI Chemical
Product number
D4255
Product name
4,5-Diazafluoren-9-one
Purity
>98.0%(HPLC)(T)
Packaging
200mg
Price
$48
Updated
2025/07/31
TRC
Product number
C992035
Product name
5H-Cyclopenta[2,1-b:3,4-b'']dipyridin-5-one
Packaging
1g
Price
$140
Updated
2021/12/16
Chem-Impex
Product number
40951
Product name
4,5-Diazafluoren-9-one,≥96%(HPLC)
Purity
≥96%(HPLC)
Packaging
200MG
Price
$59.4
Updated
2021/12/16
SynQuest Laboratories
Product number
4H17-1-46
Product name
4,5-Diaza-9H-fluoren-9-one
Purity
97%
Packaging
1g
Price
$100
Updated
2021/12/16
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4,5-DIAZAFLUOREN-9-ONE Chemical Properties,Usage,Production

Chemical Properties

Yellow crystal

Uses

4,5-Diazafluoren-9-one behaves like cyclopentadienones and reacts with [Cp*Co(C2H4)2] to form air -stable sandwich-type complexes [Cp*Co(η4-2)].

Synthesis

66-71-7

50890-67-0

The general procedure for the synthesis of 4,5-diazafluoren-9-one from 1,10-phenanthroline was as follows: 1,10-phenanthroline (4.0 g, 22.2 mmol) and potassium hydroxide (KOH, 4.0 g, 71.3 mmol) were dissolved in water (250 mL), heated to boiling and maintained for 1 hour. Subsequently, a hot solution of potassium permanganate (KMnO4, 10.0 g, 63.3 mmol) dissolved in water (150 mL) was added slowly and dropwise over about 1 hour. The reaction mixture was continued to be boiled for 2 hours and then thermally filtered. After cooling the orange colored filtrate, it was extracted with chloroform. The organic extracts were combined and dried with anhydrous sodium sulfate (Na2SO4). After removal of solvent, the crude product was obtained. Further purification was carried out by silica gel column chromatography using acetone/petroleum ether (2:1, v/v) as eluent, resulting in pure 4,5-diazafluoren-9-one as a yellow solid (2 g, 50% yield).1H NMR (CDCl3) data were as follows: δ= 8.80 (d, 2H), 7.96 (d, 2H), 7.35 (d, 2H).

References

[1] Organic Letters, 2005, vol. 7, # 10, p. 1979 - 1982
[2] Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 2000, # 6, p. 971 - 980
[3] Doklady Chemistry, 2012, vol. 442, # 2, p. 50 - 56
[4] Polyhedron, 2015, vol. 87, p. 135 - 140
[5] Chemistry of Materials, 2012, vol. 24, # 4, p. 643 - 650

4,5-DIAZAFLUOREN-9-ONE Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 4,5-DIAZAFLUOREN-9-ONE manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Product
5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one 50890-67-0
Price
US $2.20-8.80/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons
Release date
2025-07-08
Hebei Chuanghai Biotechnology Co., Ltd
Product
4,5-DIAZAFLUOREN-9-ONE 50890-67-0
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20 mt
Release date
2024-12-11
Career Henan Chemical Co
Product
4,5-DIAZAFLUOREN-9-ONE 50890-67-0
Price
US $0.00/KG
Min. Order
1KG
Purity
98$
Supply Ability
200kg
Release date
2019-08-30

50890-67-0, 4,5-DIAZAFLUOREN-9-ONERelated Search:

3-ETHYL-2-METHYLPYRIDINE 2,2'-Bipyridine 2-METHYLNICOTINALDEHYDE DIPYRIDIN-3-YLMETHANONE 4,5-DIAZAFLUOREN-9-ONE 4,5-diazafluoren-9-one benzoylhydrazone 1,8-DIAZAFLUOREN-9-ONE ISOAMYLAMINE

  • Dafo
  • 4,5-DIAZAFLUOREN-9-O
  • 4,5-DIAZAFLUORENE-9-ONE
  • 4,5-Diazafluoren-9-one, 98+%
  • 5H-Cyclopenta[1,2-b:5,4-b']dipyridin-5-one
  • 4,5-Diazafluoren-9-one 97%
  • AKOS BBS-00000188
  • 5H-PYRIDO[3',2':4,5]CYCLOPENTA[1,2-B]PYRIDIN-5-ONE
  • 4,5-Diaza-9H-fluoren-9-one 97%
  • 4,5-DIAZAFLUOREN-9-ONE
  • 4,5-Diaza-9H-fluoren-9-one
  • 4,5-Diaza-9-fluorenone
  • 5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one
  • 3,13-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3,5,10,12-hexaen-8-one
  • 50890-67-0
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