87694-43-7

Upstream product

• 16176-26-4 3,4-Diphenyl-2,5-bis-chlorcarbonyl-thiophen 
• 19799-42-9 3,4-bis(phenyl)thiophene-2,5-dicarboxylic acid 

Downstream Products

• 548-35-6 truxene 
• 7099-34-5 5,7-Dihydrodiindeno<2,1-b:1',2'-d>thiophen 
• 78649-29-3 meso-3,4-diphenylhexane-1,6-diol 
• 181218-41-7 3,4-diphenyl-2,5-bis(chloromethyl)thiophene 
• 836606-04-3 3,4-diphenylthiophene-2,5-diylbis(methylene-N,N-diethyldithiocarbamate) 
• 144934-92-9 3,4-diphenylthiophene-2,5-dialdehyde 

Relevant academic research and scientific papers

Synthesis and optical and electronic properties of thiophene derivatives

Using the Hinsberg synthesis of thiophenes, a versatile method to prepare fully derivatized, π-extended thiophenes is reported. Functionalized thiophenes were divergently synthesized to create three classes of compounds - electron-deficient, extended conj

Synthesis of 3,4-diphenyl-substituted poly(thienylene vinylene), low-band-gap polymers via the dithiocarbamate route

It has been demonstrated that the dithiocarbamate precursor route is a suitable pathway towards poly(thienylene vinylene) (PTV)-type low-band-gap polymers. Two particular dithiocarbamate precursor polymers and the corresponding conjugated polymers, poly(3,4-diphenyl-2,5-thienylene vinylene) and poly(3,4-bis(4-butylphenyl)-2,5-thienylene vinylene), have been studied. The introduction of butyl side chains in the latter leads to excellent solubility in common organic solvents. Both polymers have been prepared in a straightforward manner and in good yield. The thermal conversion of the precursor polymers into the conjugated structure was studied with in situ FT-IR and UV-vis spectroscopy. Also, with the latter technique, the band gap was determined and the thermochromic effect was studied and compared with the unsubstituted PTV. The HOMO and LUMO levels of the polymers were determined from UV-vis and electrochemical measurements.

Sulfur Compounds in Crude Oil, III - Dihydrodiindenothiophenes

Syntheses to the dihydrodiindenothiophenes 1 - 3 have been studied. 1-3 were prepared by thermolysis of 8H-indeno-1,2,3-thiadiazole (10) or 4H-indeno-1,2,3-thiadiazole (13) or by reduction of the corresponding diketones 17, 19, and 21 which were obtained by thermolysis of indeno-1,2,3-thiadiazol-8-one (16) or from 2,3-dichloroinden-1-one (23) with Na2S.Mechanisms with analogous intermediates explain the formation of the indenothiophenes. - Another synthesis of indenothiophene-10,11-dione (21) starts from 2,5-diphenyl-3,4-thiophenedicarboxylic acid (29). - 10,11-Dihydrodiindenothiophene (3) is the known sulfurization product of hydrindene, the structure of 3 is corrected.