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(organic chemistry)
C4H4S A toxic, flammable, highly reactive, colorless liquid, insoluble in water, soluble in alcohol and ether, boils at 84°C; used as a chemical intermediate and to make condensation copolymers. Also known as thiofuran.



a heterocyclic compound. Thiophene is a colorless liquid with an odor similar to that of benzene. Melting point, –38.3°C, boiling point, 84.1°C. It is sparingly soluble in water but freely soluble in organic solvents.

Thiophene is contained in the benzene fraction of coal tar (from which it is extracted), as well as in the semicoking products of Volga shale. It may be produced synthetically by pyrolysis of a mixture containing the sodium salt of succinic acid and phosphorus trisulfide; it is also obtained from butane and sulfur and, using a method developed by Iu. K. Iur’ev, from furan. Thiophene is a typical aromatic compound: it can be readily halogenated, sulfurized, and alkylated. Certain thiophene derivatives are used as biologically active substances (modified penicillins; anthelmintics) and complexones (thienyltrifluoroacetone).

References in periodicals archive ?
Monroche et al., "Linearly extended tetrathiafulvalene analogues with fused thiophene units as [pi]-conjugated spacers," Journal of Materials Chemistry, vol.
Similarly, the interplay between aliphatic pendant group and thiophene does not necessary create density of states in the HOMO-LUMO gap, despite the resulting possible distortions to the aromatic backbone.
The GC-SCD chromatogram shows that thiophene (T) and its alkylated homologues are major sulfur compounds in LD.
Sopbue et al., "Antibacterial and cytotoxic activities and SAR of some Azo compounds containing thiophene backbone," Pharmacologia, vol.
In this paper, we explored the results deriving from an apparently simple variation on a bithiophene structure, evidencing that the proposed modification on the thiophene rings allows obtaining a more stable and more efficient sensoring device.
The thiophene ring mimicked the phenyl ring of pTyr which provided [pi]-[pi] interactions with Tyr46 and Phe182.
Zdrazil, "Synergetic effects of Pt and Ru added to Mo/AlO sulfide catalyst in simultaneous hydrodesulfurization of thiophene and hydrogenation of cyclohexene," Journal of Catalysis, vol.
In this method sulfur compounds specifically thiophenes react with methyl iodate under silver tetrafluroborate presence to formed sufonium salts of s-methyl.
Such a trend may be explained by the fact that roots, compared to other plant parts, have been reported [23] to have the highest diversity and contents of thiophenes (from 64 to 100 % of the total thiophene amount).
Photosensitizing thiophenes in Porophyllum, Tessaria and Tagetes.