10252-53-6

Basic information

• Product Name: 1H-Pyrazole, 1,5-diphenyl-3-(2-phenylethenyl)-
• CAS NO: 10252-53-6
• Molecular Formula: C23H18N2
• Molecular Weight: 322.409
• Mol File: 10252-53-6.mol
• Article Data: 11

Chemical Properties

• CAS DataBase Reference: 1H-Pyrazole, 1,5-diphenyl-3-(2-phenylethenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Pyrazole, 1,5-diphenyl-3-(2-phenylethenyl)-(10252-53-6)
• EPA Substance Registry System: 1H-Pyrazole, 1,5-diphenyl-3-(2-phenylethenyl)-(10252-53-6)

Safety Data

• Hazardous Substances Data: 10252-53-6(Hazardous Substances Data)

Upstream product

• 2515-62-0 1,5-diphenyl-3-[(E)-2-phenylethenyl]-4,5-dihydro-1H-pyrazoline 
• 140-10-3 (E)-3-phenylacrylic acid 
• 536-74-3 phenylacetylene 
• 59715-62-7 1-((1E,4E)-1,5-diphenylpenta-1,4-dien-3-ylidene)-2-phenylhydrazine 
• 35225-79-7 dibenzylideneacetone 
• 100-63-0 phenylhydrazine 
• 1896-62-4 (E)-benzalacetone 
• 93-58-3 benzoic acid methyl ester 
• 358723-67-8 (E)-1-phenyl-2-((E)-4-phenylbut-3-en-2-ylidene)hydrazine 
• 28714-13-8 (E)-3-Phenyl-1-(3-phenyl-oxiranyl)-propenone 
• 59-88-1 phenylhydrazine hydrochloride 
• 32005-36-0 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 
• 52409-22-0 tris-(dibenzylideneacetone)dipalladium⁽⁰⁾ 
• 538-58-9 1,5-diphenyl-1,4-pentadiene-3-one 

Relevant articles and documents

Quenching of Singlet Oxygen by 1,3,5-Triaryl-2-pyrazolines

The efficient quenching of photochemically generated singlet oxygen by four 1,3,5-triaryl-2-pyrazolines (5-8) and p-(diethylamino)benzaldehyde diphenylhydrazone (9) has been investigated by inhibition of the photosensitized oxygenation of 1,3 diphenylisobenzofuran and 2-methyl-2-pentene. 1-Phenyl-3--5--2-pyrazoline (8) quenches singlet oxygen without any reaction at all, and the quenching rate constant reaches a maximum of 5.8 x 109 M-1 s-1.The quenching ability correlates with the value of their one-electron oxidation potentials (Ep).

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New reaction of photoaromatization of aryl- and hetarylpyrazolines

Aryl- and hetarylpyrazolines smoothly undergo photoaromatization under irradiation with the visible light (λ > 400 nm) in the presence of carbon tetrachloride. The reaction is accompanied by an increase in the acidity of the medium and a change in the fluorescence. The structure of pyrazoline and solvent considerably affect the photoaromatization rate. The mechanism of the reaction was proposed, which agrees with the experimental data.

Blue ray absorbent as well as preparation method and application thereof

The invention relates to a blue ray absorbent as well as a preparation method and application thereof. The blue ray absorbent has a structure represented by a general formula (shown in the description). The structure of the novel blue ray absorbent contains three phenyl units, C represents N-N and an unsaturated double bond and has a relatively large molecular weight, a conjugate group has excellent absorption capacity in a wavelength range of 400nm-500nm, and relatively good thermal stability is guaranteed due to the large molecular weight. The blue ray absorbent is moderate in molecular polarity and has relatively good consistency with polyethylene glycol terephthalate, and the unsaturated double bond can effectively participate in polymerization so as to enhance the heat stability, and the change of TGA is less than 1% when the processing temperature reaches 300 DEG C, so that the thermal degradation or decomposition of the blue ray absorbent caused due to the high temperature in production and processing processes can be effectively avoided, and the loss of a blue ray absorption function is prevented.

Iron-catalyzed aerobic oxidative aromatization of 1,3,5-trisubstituted pyrazolines

A simple and high yielding method for the synthesis of tri-substituted pyrazoles via iron(III) catalyzed aerobic oxidative aromatization of pyrazolines has been reported. The process demonstrates a variety of functional group tolerance.