100990-20-3

Upstream product

• 2461-80-5 diphenacyl sulfide 
• 70-11-1 α-bromoacetophenone 

Downstream Products

• 16939-13-2 3,4-diphenylthiophene 
• 4217-65-6 (R,S)-2,3-diphenylbutane-2,3-diol 
• 100990-36-1 cis-3,4-dihydroxy-3,4-diphenylthiolane 1,1-dioxide 
• 836606-04-3 3,4-diphenylthiophene-2,5-diylbis(methylene-N,N-diethyldithiocarbamate) 
• 181218-41-7 3,4-diphenyl-2,5-bis(chloromethyl)thiophene 

Relevant academic research and scientific papers

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.

STEREOSELECTIVE SYNTHESIS OF ERYTHRO- AND THREO-1,2-DIOLS FROM DIKETO SULFIDES VIA CIS-3,4-DIHYDROXYTHIOLANES

Intramolecular reductive coupling reaction of a series of diketo sulfides (1) by a low-valent titanium reagent at 0 deg C in tetrahydrofuran leads to cis-3,4-dihydroxythiolanes (2) exclusively in 67-89percent yields.Desulfurization of 2 by Raney nickel in

GENERAL SYNTHESIS OF POLYSUBSTITUTED THIOPHENES FROM DIKETO SULFIDES

Treatment of diketo sulfides with a low-valent titanium reagent at 0 deg C (in two cases at room temperature) affords 3,4-dihydroxythiolanes in good yields.The acid-catalyzed (p-toluenesulfonic acid) dehydration of the latter compounds leads to the corres

GENERAL SYNTHESIS OF 2,5-DIHYDROTHIOPHENES (3-THIOLENES) FROM DIKETO SULFIDES

The intramolecular reductive coupling reaction of easily accesible diketo sulfides by a low-valent titanium reagent (prepared from titanium(IV) chloride and zinc powder) provides an efficient general synthesis of 2,5-dihydrothiophenes.