4659-48-7

Usage

Uses

Used in Printing Industry:
3,3',4,4'-Tetramethyl Benzophenone is used as a photoinitiator for the processing of printing inks and varnishes. Its photostability and ability to generate radicals upon exposure to ultraviolet light contribute to the curing of polymers and resins, ensuring a high-quality finish and durability in printed materials.
Used in Coatings Industry:
In the coatings industry, 3,3',4,4'-Tetramethyl Benzophenone is used as a photoinitiator to facilitate the curing process of various types of coatings. Its effectiveness in generating radicals under ultraviolet light helps achieve a fast and efficient curing process, resulting in a robust and long-lasting protective layer on surfaces.
Due to its applications, 3,3',4,4'-Tetramethyl Benzophenone is commonly found in industrial settings, and it is handled with care to prevent exposure and potential health hazards.

InChI:InChI=1/C17H18O/c1-11-5-7-15(9-13(11)3)17(18)16-8-6-12(2)14(4)10-16/h5-10H,1-4H3

Upstream product

• 56-23-5 tetrachloromethane 
• 6578-78-5 1,1-bis(3,4-dimethylphenyl)ethylene 
• 95-47-6 o-xylene 
• 21900-23-2 3,4-dimethylbenzoyl chloride 
• 5973-71-7 3,4-dimethylbenzaldehyde 
• 583-71-1 4-bromo-o-xylene 
• 32315-10-9 bis(trichloromethyl) carbonate 
• 31599-61-8 3,4-dimethyliodobenzene 
• 13939-06-5 molybdenum hexacarbonyl 
• 20809-71-6 Methyl-2,2-bis-<3,4-dimethyl-phenyl>-3-oxo-succinat 
• 6460-66-8 2,2-bis(3,4-dimethylphenyl)acetic acid 

Downstream Products

• 1200132-82-6 3,3',4'-trimethylbenzophenone-4-carboxylic acid 
• 4659-50-1 3-methylbenzophenone-3',4,4'-tricarboxylic acid 
• 2479-49-4 3,3',4,4'-benzophenonetetracarboxylic acid 
• 101583-78-2 3,4,3',4'-tetramethyl-benzophenone oxime 

Relevant academic research and scientific papers

Solution-Processable n-Type Organic Semiconductors Based on Angular-Shaped 2-(12 H -Dibenzofluoren-12-ylidene)malononitrilediimide

The angular-shaped n-type semiconductors 2-(12H-dibenzofluoren-12-ylidene)malononitrilediimide 2a and 2b were successfully designed, synthesized, and fully characterized by optical absorption and fluorescence, cyclic voltammetry, X-ray crystal structure a

Nickel-Catalyzed Molybdenum-Promoted Carbonylative Synthesis of Benzophenones

A nickel-catalyzed molybdenum-promoted carbonylative coupling reaction for the synthesis of benzophenones from aryl iodides has been developed. Various substituted diaryl ketones were synthesized in moderate to excellent yields under CO-gas-free conditions. A synergetic effect of both nickel and molybdenum has been observed, which is also responsible for the success of this transformation.

A 3,3 the [...], 4,4 the method for preparing [...] -benzophenone tetracidic dianhydride

The invention discloses a method for synthesizing 3,3',4,4'-benzophenonetetracarboxylic dianhydride by taking o-xylene and bis(trichloromethyl) carbonate as raw materials. The method comprises the steps of: by taking o-xylene and bis(trichloromethyl) carbonate as the raw materials, performing acylation reaction in catalysis of anhydrous lewis acid, thus obtaining bis(3,4-ditolyl)methanone; fully oxidizing bis(3,4-ditolyl)methanone in a potassium permanganate/hydrochloric acid system, and carrying out filtration, concentration, crystallization and the like to obtain 3,3',4,4'-benzophenonetetracarboxylic acid; performing vacuum high-temperature melting and dehydration to 3,3',4,4'-benzophenonetetracarboxylic acid to obtain the 3,3',4,4'-benzophenonetetracarboxylic dianhydride product. The preparation method has the advantages of being simple in technology, high in yield, fewer in three wastes, capable of recycling anhydrous lewis acid, low in production cost and easy for industrial implementation, and the like.

Development and optimization of producing 3,3′, 4,4′-benzophenonetetracarboxylic dianhydride

This paper includes a series of experiments conducted in order to develop a laboratory method for producing 3,3′, 4,4′-benzophenonetetracarboxylic dianhydride and selection of the optimum conditions, allowing to obtain the greatest yield. 3,3′, 4,4′-benzophenonetetracarboxylic dianhydride is used for the preparation of polyimides with high thermal stability, chemical resistance as well as high strength and high Young's modulus. Benzophenonetetracarboxylic dianhydride was prepared by multistep route: Friedel-Crafts alkylation of o-xylene to obtain 3,3′, 4,4′-tetramethyl benzophenone followed by liquid phase oxidation to benzophenonetetracarboxylic acid and dehydration.

One-pot synthesis preparation of 3,3 the [...], 4,4 the benzophenone-tetraalkyl [...] method of

The invention discloses a method for preparing 3,3',4,4'-tetraalkyl benzophenone by a one-pot method and belongs to the field of chemical synthesis. The method comprises the steps of mixing o-dialkylphenyl, which serves as a raw material, and Lewis acid and concentrated sulfuric acid, which serve as catalysts, so as to form a mixed liquid, dropwise adding carbon tetrachloride into the mixed liquid, and carrying out heat preservation for 0.5-5 hours at the temperature of 0-30 DEG C after the dropwise adding is completed. Compared with the prior art, the method disclosed by the invention has the advantages that a two-step synthesis method is simplified into the one-pot method, so that the process is simplified, the operation is simpler and more convenient, the product can be obtained by one-step aftertreatment only, and the productivity is increased. Furthermore, the method has low requirements on temperature, the whole process does not need heating or cooling, no special requirements on equipment exist, and the operation is safe, simple and convenient.

Amino acid derivatives

Described herein are compounds having the general formula: wherein: Ar1 and Ar2 are independently selected aryl groups, optionally substituted with substituents selected from the group consisting of alkyl, cycloalkyl, alkoxy, alkanoyl, aralkyl, aralkyloxy