Thiophene S-oxides: convenient preparation, first complete structural characterization and unexpected dimerization of one of them, 2,5-diphenylthiophene-1-oxide
- 1 January 1995
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 4,p. 473-474
- https://doi.org/10.1039/c39950000473
Abstract
Oxidation of 2,5-disubstituted thiophenes and benzothiophenes by H2O2 in CF3CO2H–CH2Cl2 appears a convenient method to access the corresponding reactive sulfoxides; it is used to prepare 2,5-diphenylthiophene-1-oxide, which is the first thiophene oxide to be fully structurally characterised crystallographically and the nonplanar structure of the thiophene ring is established; formation of an unexpected dehydrogenated dimer of this sulfoxide is also observed.Keywords
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