61595-99-1

Upstream product

• 5471-96-5 1,3-bis(4-bromophenyl)-2-propen-1-one 
• 100-63-0 phenylhydrazine 
• 99-90-1 para-bromoacetophenone 
• 1122-91-4 4-bromo-benzaldehyde 
• 5471-96-5 (E)-1,3-bis(4-bromophenyl)prop-2-en-1-one 

Downstream Products

• 1174651-71-8 1-phenyl-3,5-di(4-trimethylsilylethynylphenyl)pyrazoline 

Relevant academic research and scientific papers

Synthesis and antimicrobial evaluation of arylated 1,3,5-triphenyl pyrazoline derivatives using suzuki-miyaura reactions

The first palladium –catalyzed coupling reactions of 1,3,5-triphenyl pyrazoline are reported. The Suzuki-Miyaura reaction of 3-(4-bromophenyl)-1,5-diphenyl pyrazoline with one equivalent of arylboronic acids afforded 3-(biphenyl)-1,5-diphenyl pyrazoline in 53-78 % yield. While the Suzuki-Miyaura reactions of 3,5-bis(4-bromophenyl)-1-phenyl pyrazoline with two equivalent of arylboronic acids gave 3,5-bis(biphenyl)-1-phenyl pyrazoline in 55-80% yield. The characterization of the synthesized derivatives (5a-h) and (6a-h) were accomplished on the basis of NMR, FT-IR, and mass techniques. The newly pyrazoline derivatives have been investigated for their in vitro antibacterial activity against gram- negative and gram-positive bacteria. The di-coupling compounds (6a-h) exhibited promising antibacterial against all four bacterial strains compared to the mono-coupling compounds (5a-h) which displayed a slight activity. The compound 6d showed a potent activity significantly more active than Trimethoprim (100μg/ml).

Microwave-irradiated synthesis and biological evaluation of 3,5-diaryl-1-phenyl-2-pyrazolines as antibacterial and anti-inflammatory agents

In a wide search program towards a biologically active antibacterial and anti-inflammatory agents, a series of 3,5-diaryl-1-phenyl-2-pyrazoline have been synthesized with excellent yields employing microwave techniques starting from substituted α,β-unsaturated carbonyl compounds which undergo cyclization reactions with phenylhydrazine. The structures of newly synthesized compounds were characterized and confirmed on the basis of FT-IR, 1H NMR and mass spectral analyses. The synthesized compounds 3,5-diaryl-1-phenyl-2-pyrazolines had shown significant activity against Staphylococcus aureus (MTCC 87), Escherichia coli (MTCC 40), Pseudomonas aeruginosa (MTCC 424) and Proteus vulgaris (MTCC 426) by cup plate method using tetracycline-SD 037 as a reference standard. The anti-inflammatory property of 1,3,5-diaryl-1-phenyl-2-pyrazolines were screened by using carragenan induced paw edema method in Wistar rat. The anti-inflammatory activities were comparable to that of the standard drug diclofenac. The safety of 3,5-diaryl-1-phenyl-2-pyrazolines were reflected by toxicity studies.

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.

Antimicrobial, analgesic, DPPH scavenging activities and molecular docking study of some 1,3,5-triaryl-2-pyrazolines

A series of 1,3,5-triaryl-2-pyrazolines 2a-g were synthesized by the reaction of 4,40-disubstituted chalcone with phenyl hydrazine. All these compounds were characterized by NMR, IR and mass spectral and single crystal XRD data. All the synthesized produc

Novel efficient green electroluminescent conjugated polymers based on fluorene and triarylpyrazoline for light-emitting diodes

A series of novel light-emitting conjugated polymers based on fluorene and triarylpyrazoline were synthesized in good yields through Suzuki coupling reactions. The resulting polymers were characterized by NMR, FT-IR, elemental analysis, DSC, TGA and GPC.