65007-01-4

Usage

InChI:InChI=1/C16H14O/c1-2-16(17)12-7-8-15-13(10-12)9-11-5-3-4-6-14(11)15/h3-8,10H,2,9H2,1H3

Upstream product

• 86-73-7 9H-fluorene 
• 79-03-8 propionyl chloride 
• 123-62-6 propionic acid anhydride 
• 4122-52-5 1-(1H-imidazol-1-yl)propan-1-one 
• 73686-44-9 methyl pyridin-2-yl acetate 
• 802294-64-0 propionic acid 

Downstream Products

• 784-50-9 fluorenone-2-carboxylic acid 

Relevant academic research and scientific papers

NOVEL FLUORENYL B-OXIME ESTER COMPOUNDS, PHOTOPOLYMERIZATION INITIATOR AND PHOTORESIST COMPOSITION CONTAINING THE SAME

The present invention relates to a novel β-oximester fluorene derivative compound, a photopolymerization initiator comprising the same, and a photoresist composition.

Synthesis and liquid crystal phase behaviour of 2-(4-cyanophenyl)-7-n-alkylfluorenes: Luminescent mesogens

A new range of nematic liquid crystals containing the 2-phenylfluorene core has been prepared which may be considered as a model system for luminescent mesogens, which have potential interest as new display materials.

The Synthesis of Bridged Oligophenylenes from Fluorene 1. Terphenyls and Quaterphenyls

Improved methods are presented for the alkylation of fluorene (2) to 9,9- dialkylfluorenes (3-6) free from 9-monoalkylfluorenes.Mono- and dihalogenated derivatives of 2-6 are reported as are a variety of ring substituted 9,9-dialkylfluorenes.Halogenated 9,9-dialkylfluorenes and aryl or methyl Grignard reagents were cross-coupled in Pd-catalyzed reactions to generate a series of novel p-oligophenylenes (four terphenyls (26, 27, 29 and 31c) and nineteen quterphenyls (33-6, 64-71 and 73-79)) each possessing one or two dialkylated methylene bridges between aromatic rings.Each bridged oligophneylene showed enhanced solubility, high quantum efficiency and photochemical stability.A number of quaterphenyls incorporated substituents which extended the conjugation of the oligophenylene chromophore.

2-(Trifluoromethylsulfonyloxy)pyridine as a Reagent for the Ketone Synthesis from Carboxylic Acids and Aromatic Hydrocarbons

A new reagent 2-(trifluoromethylsulfonyloxy)pyridine (TFOP) was prepared by the reaction of sodium salt of 2-pyridinol with trifluoromethylsulfonyl chloride in dioxane.The conpound TFOP in trifluoroacetic acid has been found to intermolecularly dehydrate from benzoic acid and aromatic hydrocarbons to give the corresponding benzophenones in high yield.It was further elucidated, in the reaction of fluorene, that a variety of carboxylic acids can be used as the acyl precursor for the aromatic ketone synthesis in conjunction with the TFOP/TFA system.This acylation procedure has been applied to the synthesis of 2-acylthiophenes, which are hard to prepare in a satisfactory yield by the classical Friedel-Crafts reaction using aluminum chloride as the catalyst.

N-Acylimidazoles-Trifluoroacetic Acid System as the Acylating Agent for Aromatic Hydrocarbons

N-Benzoylimidazole in trifluoroacetic acid could benzoylate electron-rich aromatic compounds, such as durene, p-dimethoxybenzene, mesitylene, anisole, thiophene, and fluorene, to give the corresponding benzophenone derivatives in good yields.It was further elucidated, in the reaction of fluorene, that N-acylimidazoles composed of a variety of acyl groups also could be used for the ketone synthesis.Therein, the imidazolides of aliphatic carboxylic acids or substituted benzoic acid with an electron-donating group gave ketones in high yields.The above-mentioned aromaticcompounds were also acylated with N-trifluoroacetylimidazole and free carboxylic acids in trifluoroacetic acid.The mechanism for these reactions was assumed to proceed via a mixed anhydride between trifluoroacetic acid.