The reaction between 2,5-dimethyl-3,4-dinitrothiophen and sodium arenethiolates gives aryl 2-(5-methyl-4-nitro)thenyl sulphides via an unusual nucleophilic substitution, as shown by the 1H n.m.r. spectra of the isolated sulphides and the corresponding sulphones.
M. Novi, F. Sancassan, G. Guanti and C. Dell'Erba, J. Chem. Soc., Chem. Commun., 1976, 303 DOI: 10.1039/C39760000303
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