Diphenylene sulfide, DBT
3D model (JSmol)
|Molar mass||184.26 g/mol|
|Melting point||97 to 100 °C (207 to 212 °F; 370 to 373 K) (lit.)|
|Boiling point||332 to 333 °C (630 to 631 °F; 605 to 606 K)|
|Solubility in other solvents||benzene and related|
|GHS signal word||Danger|
|H302, H311, H315, H331, H332, H400, H410|
|P261, P264, P270, P271, P273, P280, P301+312, P302+352, P304+312, P304+340, P311, P312, P321, P322, P330, P332+313, P361, P362, P363, P391, P403+233, P405, P501|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
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.
Synthesis and reactions
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.
- Teh C. Ho "Deep HDS of diesel fuel: chemistry and catalysis" Catalysis Today 2004, Volume 98, pp. 3-18. doi:10.1016/j.cattod.2004.07.048
- L. H. Klemm, Joseph J. Karchesy "Dibenzothiophene from biphenyl and derivatives" Journal of Heterocyclic Chemistry, 1978, Volume 15 Issue 4, Pages 561 - 563. doi:10.1002/jhet.5570150407