New stable dication of 1,3,4,6-tetrakis(isopropylthio)-2λ<sup>4</sup>,δ<sup>2</sup>-thieno[3,4-c]thiophene generated by its oxidation using nitrosonium tetrafluoroborate
作者:Akira Tsubouchi、Noboru Matsumura、Hiroo Inoue
DOI:10.1039/c39910000520
日期:——
The oxidation of 1,3,4,6-tetrakis(isopropylthio)-2λ4,δ2-thieno[3,4-c]thiophene 1 by NOBF4(2 equiv.) gives the dication 2, which reacts with H2O, MeOH and aniline to give the thiophenederivatives 3–5 by fission of the C–S bond of the thieno[3,4-c]thiophene ring; 2 also reacts with 1,2-dimercaptobenzene and NaBH4 to give the adducts 6 and 7 respectively.