3477-75-6

Upstream product

• 98-88-4 benzoyl chloride 
• 3544-14-7 5-[3-(5-phenyl-[1,3,4]oxadiazol-2-yl)-phenyl]-1⁽²⁾H-tetrazole 
• 36438-66-1 1,3-bis(ethyl carboximidate)bezene dihydrochloride 
• 613-94-5 benzoic acid hydrazide 
• 99610-62-5 1,3-[phenylenebis(methanylidene)] di(benzohydrazide) 
• 36477-40-4 C₂₂H₁₈N₄O₄ 
• 1711-11-1 3-cyanobenzoyl chloride 
• 18039-42-4 5-phenyl-2H-1,2,3,4-tetrazole 
• 3441-04-1 3-(5-phenyl-[1,3,4]oxadiazol-2-yl)-benzonitrile 
• 18039-42-4 5-Phenyl-1H-tetrazole 
• 99-63-8 benzene-1,3-dicarbonyl dichloride 
• 65-85-0 benzoic acid 
• 2760-98-7 isophthalic dihydrazide 
• 121-91-5 isophthalic acid 

Downstream Products

• 36477-40-4 C₂₂H₁₈N₄O₄ 
• 2372-71-6 N,N'-bis(benzoyl)terephthalic acid dihydrazide 

Relevant academic research and scientific papers

Synthesis, liquid crystalline behaviour and structure-property relationships of 1,3-bis(5-substituted-1,3,4-oxadiazol-2-yl)benzenes

Two series containing 1,3-bis(1,3,4-oxadiazol-2-yl)benzene as a rigid core (RC) and alkyl or perfluoroalkyl as terminal chains were synthesized and characterized. Liquid crystal properties of the synthesized compounds have been investigated by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction techniques. Conformation effects of the synthesized products on the dipole moments were also investigated.

UV-Induced 1,3,4-Oxadiazole Formation from 5-Substituted Tetrazoles and Carboxylic Acids in Flow

A range of 1,3,4-oxadiazoles have been synthesized using a UV-B activated flow approach starting from carboxylic acids and 5-substituted tetrazoles. The application of UV light represents an attractive alternative to the traditional thermolytic approach and has demonstrated comparable efficiency and versatility, with a diverse substrate scope, including the incorporation of highly substituted amino acids.

Excited State Luminescence of Multi-(5-phenyl-1, 3, 4-oxadiazo-2-yl) benzenes in an Electron-Donating Matrix: Exciplex or Electroplex?

Multi-(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzenes show emission in organic solvents from ultraviolet to blue (339-447 nm). The reduction potentials E 1/2red cover a large range of -2.11 V for 2, 5-diphenyl-1, 3, 4-oxadiazole to -0.76 V for 1, 2, 3, 4, 5, 6-hexa(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzene. An unexpectedly wide spectral range of the oxadiazole (OXD) exciplex emissions in PVK is observed, ranging from 406 to 603 nm. The OXDs also exhibit similar electroluminescence (EL) when blended into polyvinylcarbazole (PVK). A linear correlation between the λ max of the electroluminescence and photoluminescence is observed, implying that the emission mechanisms in both processes are similar. In addition, the linear correlation between the E1/2red versus λmax of EL (eV) reflected that the term of the charge-transfer configuration of the contact electron-hole pair plays a major role in the exciplex emission. The exciplex EL of 1, 2, 5-tri(5-phenyl-1, 3, 4-oxadiazo-2-yl)benzene (5) could be as high as 1.0 cd/A. Since the exciplex emission usually has a large Stokes shift, this provides a window for us to generate duo emissions for near white light EL with high efficiency. Among the devices we tried, the device of PVK/2-tert-butylphenyl-5-biphenyl-1, 3, 4-oxadiazole/5/2, 5, 8, 11-tetra-tert-butylperylene (100:40:40:4) gave EL with good current efficiency of 1.63 cd/A.

An Improved Synthesis of 1,3- and 1,4-Bisbenzenes via Oxidation of Bis-aroylhydrazones of Iso- and Terephthalaldehyde with Lead(IV) Acetate

The oxidation of bis-aroylhydrazones of iso- and terephthalaldehyde with lead(IV) acetate leading to 1,3- and 1,4-bisbenzenes is described.