Thiophenes yog cov tshuaj tsw qab tsib lub nplhaib uas muaj plaub cov pa roj carbon atom thiab ib qho sulfur atom. Lawv tshwm sim nyob rau hauv kerogens, bitumen, coals, roj crude (petroleum), thiab sediments ntawm concentrations mus txog ∼10 wt % (Table 1).
Cov tshuaj twg muaj thiophene nplhaib hauv nws cov qauv?
Txawm li cas los xij, ntau cov tshuaj muaj muag xws li Tipepidine, Tiquizium Bromides, Timepidium Bromide, Dorzolamide, Tioconazole, Citizolam, Sertaconazole Nitrate thiab Benocyclidine kuj muaj thiophene nucleus.
Yuav ua li cas thiophene tau los ntawm acetylene?
ii) Thiophene tuaj yeem ua synthesized los ntawm kev sib xyaw ntawm acetylene thiab hydrogen sulfide los ntawm lub raj uas muaj alumina ntawm 400 ° C. Txoj kev no yog siv los ua lag luam. iii) Thiophene kuj tseem tuaj yeem npaj los ntawm cua sov sodium succinate nrog phosphorous trisulphide.
Yuav ua li cas thiophene cais tawm ntawm thee tar?
Thiophene thiab tshwj xeeb tshaj yog nws cov derivatives tshwm sim hauv cov roj av, qee zaum hauv cov concentrations txog 1-3%. Cov ntsiab lus thiophenic ntawm roj thiab thee yog tshem tawm ntawm cov txheej txheem hydrodesulfurization (HDS).
Cov hauv qab no twg muaj nyob hauv thiophene thiab pyrrole?
Kev piav qhia: Thiophene yog feem ntau resonance stabilized tsib lub nplhaib ntawm cov sib txuas saum toj no. Raws li thiophene muaj Sulphurthiab tsawg kawg electronegativity nplhaib tshaj nitrogen thiab oxygen hauv pyrrole thiab furan feem.
