ChemicalBook > CAS DataBase List > 9-Fluorenone-2-carboxylic acid
9-Fluorenone-2-carboxylic acid
- Product Name
- 9-Fluorenone-2-carboxylic acid
- CAS No.
- 784-50-9
- Chemical Name
- 9-Fluorenone-2-carboxylic acid
- Synonyms
- NSC 81258;NSC 113321;2-Carboxyfluoren-9-one;LABOTEST-BB LT00153934;9-oxo-2-fluorenecarboxylate;Fluorenone-2-carboxylicacid;Fluorenone-2-carboxylic acid;9-Oxo-2-fluorenecarboxyic Acid;9-FLUORENONE-2-CARBOXYLIC ACID;9-oxofluoren-2-carboxylic acid
- CBNumber
- CB6488604
- Molecular Formula
- C14H8O3
- Formula Weight
- 224.21
- MOL File
- 784-50-9.mol
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9-Fluorenone-2-carboxylic acid Property
- Melting point:
- >300 °C (lit.)
- Boiling point:
- 325.61°C (rough estimate)
- Density
- 1.2337 (rough estimate)
- refractive index
- 1.5400 (estimate)
- storage temp.
- Inert atmosphere,Room Temperature
- form
- Fine Powder
- pka
- 3.85±0.20(Predicted)
- color
- Yellow
- CAS DataBase Reference
- 784-50-9(CAS DataBase Reference)
- NIST Chemistry Reference
- 9-Fluorenone-2-carboxylic acid(784-50-9)
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Safety
- Safety Statements
- 24/25
- WGK Germany
- 3
- HazardClass
- IRRITANT
- HS Code
- 29183000
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Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
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
- F1530
- Product name
- 9-Fluorenone-2-carboxylic acid
- Purity
- 98%
- Packaging
- 1g
- Price
- $53.6
- Updated
- 2023/06/20
TCI Chemical
- Product number
- F0263
- Product name
- 9-Fluorenone-2-carboxylic Acid
- Purity
- >96.0%(HPLC)(T)
- Packaging
- 10g
- Price
- $224
- Updated
- 2025/07/31
TRC
- Product number
- F462500
- Product name
- 9-Fluorenone-2-carboxylic Acid
- Packaging
- 5g
- Price
- $100
- Updated
- 2021/12/16
TRC
- Product number
- F462500
- Product name
- 9-Fluorenone-2-carboxylic Acid
- Packaging
- 25g
- Price
- $340
- Updated
- 2021/12/16
TRC
- Product number
- F462500
- Product name
- 9-Fluorenone-2-carboxylic Acid
- Packaging
- 50g
- Price
- $595
- Updated
- 2021/12/16
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9-Fluorenone-2-carboxylic acid Chemical Properties,Usage,Production
Chemical Properties
yellow fine powder
Uses
9-Fluorenone-2-carboxylic Acid (cas# 784-50-9) is a compound useful in organic synthesis.
Synthesis Reference(s)
Journal of the American Chemical Society, 70, p. 3958, 1948 DOI: 10.1021/ja01191a530
Organic Syntheses, Coll. Vol. 3, p. 420, 1955
Synthesis
3096-44-4
784-50-9
General procedure for the synthesis of 9-fluorenone-2-carboxylic acid from the compound (CAS: 3096-44-4): potassium hydroxide (1.6 g, 29.4 mmol) was added to a mixture of methanol (7 mL) and water (7 mL) containing compound 12 (200 mg, 0.98 mmol), and the reaction mixture was stirred for 6 hours at 110 °C. Upon completion of the reaction, the mixture was cooled to room temperature and subsequently concentrated under reduced pressure. The pH was adjusted to 3 with 1 N hydrochloric acid and the mixture was extracted with ethyl acetate (30 mL x 3). The organic layers were combined, dried with anhydrous sodium sulfate, filtered and concentrated to afford the target product 9-fluorenone-2-carboxylic acid (200 mg, 91% yield) as a yellow solid.1H NMR (400 MHz, DMSO-d6) δ 13.30 (s, 1H), 8.19 (d, J = 7.6 Hz, 1H), 8.03 (s, 1H), 7.97-9.89 ( m, 2H), 7.72-7.64 (m, 2H), 7.50-7.44 (m, 1H).
References
[1] Bioorganic and Medicinal Chemistry, 2016, vol. 24, # 22, p. 5861 - 5872
[2] Patent: CN104557862, 2017, B. Location in patent: Paragraph 0102-0104; 0109-0110
9-Fluorenone-2-carboxylic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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