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|Section2= |Section3= |Section7= |Section8= }} Dibenzothiophene (DBT) is the organosulfur compound consisting of two benzene rings fused to a central thiophene ring. It is a colourless solid that is chemically somewhat similar to anthracene. This tricyclic heterocycle, and especially its alkyl substituted derivatives, occur widely in heavier fractions of petroleum.〔Teh C. Ho "Deep HDS of diesel fuel: chemistry and catalysis" Catalysis Today 2004, Volume 98, pp. 3-18. 〕 ==Synthesis and reactions== Dibenzothiophene is prepared by the reaction of biphenyl with sulfur dichloride in the presence of aluminium trichloride.〔L. H. Klemm, Joseph J. Karchesy "Dibenzothiophene from biphenyl and derivatives" Journal of Heterocyclic Chemistry, 1978, Volume 15 Issue 4, Pages 561 - 563. 〕 Reduction with lithium results in scission of one C-S bond. S-oxidation occurs to give the sulfone, which is more labile than the parent dibenzothiophene. With butyl lithium, this heterocycle undergoes stepwise lithiation at the 4- and 6- positions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「dibenzothiophene」の詳細全文を読む スポンサード リンク
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