2969-68-8

Usage

Uses

Used in Organic Synthesis:
2,4-difluoro-9H-fluoren-9-one is used as a building block in organic synthesis for its unique structure and properties, enabling the creation of a wide range of compounds with potential applications in different fields.
Used in Pharmaceutical Production:
In the pharmaceutical industry, 2,4-difluoro-9H-fluoren-9-one is used as a precursor in the production of various pharmaceuticals. Its unique structure allows for the development of new drugs with potential therapeutic benefits.
Used in Agrochemical Production:
2,4-difluoro-9H-fluoren-9-one is also utilized as a precursor in the production of agrochemicals, contributing to the development of effective pesticides and other agricultural chemicals.
Used in Materials Science:
In the field of materials science, 2,4-difluoro-9H-fluoren-9-one has potential applications due to its unique properties, which can be harnessed to develop new materials with specific characteristics.
Used as a Fluorescent Probe in Biological Studies:
2,4-difluoro-9H-fluoren-9-one has potential uses as a fluorescent probe in biological studies, allowing researchers to investigate various biological processes and interactions due to its fluorescent properties.

Upstream product

• 610-94-6 2-bromobenzoic acid methyl ester 
• 2265-93-2 2,4-difluoro-1-iodobenzene 
• 114995-57-2 (2-Amino-3,5-difluoro-phenyl)-phenyl-methanone 
• 317-67-9 4-Fluor-2-amino-9-oxo-fluoren 
• 444-14-4 2-bromo-4,6-difluoroaniline 
• 114995-48-1 N-(2-bromo-4,6-difluorophenyl)pivalamide 
• 114995-54-9 2-pivalamido-3,5-difluorobenzophenone 
• 114995-51-6 (2-pivalamido-3,5-difluorophenyl)phenylcarbinol 
• 59247-52-8 isopropyl o-bromobenzoate 
• 144025-03-6 2,4-difluorophenylboronic acid 
• 920016-97-3 2',4'-difluorobiphenyl-2-carboxylic acid 
• 98-80-6 phenylboronic acid 

Downstream Products

• 3127-59-1 2,4-Difluor-7-nitro-9-oxo-fluoren 
• 2969-69-9 2-Amino-5.7-difluor-9-oxo-fluoren 
• 2969-67-7 2,5,7-trifluorofluorenone 

Relevant academic research and scientific papers

Fluorene derivative and electronic device

The invention provides a fluorene derivative and an electronic device. By introducing a fluorene rigid structure into the fluorene derivative, the obtained fluorene derivative has an excellent film-forming property and high thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer,and can reduce the driving voltage, improve the efficiency and the brightness, prolong the service life and the like. In addition, the preparation method of the fluorene derivative is simple, raw materials are easily available, and the industrial development requirements can be met.

New electron-accepting quinoxalinothiadiazole-containing heterocycles as promising building blocks for organic optoelectronic devices

Two novel quinoxalinothiadiazole-containing dibromides—4,9-dibromo-6,7-bis(9,9-didodecyl7-fluoro-9H-fluoren-2-yl)[1,2,5]thiadiazolo[3,4-g]quinoxaline (11) and 4,9-dibromo-6,7-bis(9,9-didodecyl-5,7-difluoro-9H-fluoren-2-yl)[1,2,5]thiadiazolo[3,4-g]quinoxaline (19)—have been synthesized, which are promising strong electron-accepting building blocks for preparing highly efficient narrow-bandgap D–A conjugated polymers. The composition and structure of monomers 11 and 19 have been proved by elemental analysis data, IR spectroscopy, and 1H and 13C NMR.

A General Synthesis of Substituted Fluorenones and Azafluorenones

Twenty-one variously substituted fluorenones and azafluorenones have been synthesized via photochemical Pschorr cyclizations of 2-diazoniodiaryl ketones as the key ring-forming step.Direct, (bipy)3RuII-, or (bipy)3RuII/CuII-photosensitized conditions were used, depending on the system to be cyclized.Where selectivities were possible in the ring closure, the isomer ratios obtained were in accord with an aryl radical as the reactive intermediate.The precursor aminodiaryl ketones were obtained from the sequence ortho lithiation of an arylpivalamide, reaction withan aryl aldehyde to give a 2-pivalamidodiarylcarbinol, oxidation to give a 2-pivalamidodiaryl ketone, and hydrolysis to give the 2-aminodiaryl ketone.