Reaction of -alkylthiazolium halides, including thiamine, with superoxide ion. Chemistry and biological implications.
作者:Alessandro Dondoni、Guido Galliani、Annarosa Mastellari、Alessandro Medici
DOI:10.1016/s0040-4039(00)98871-3
日期:1985.1
N-alkylthiazolium halides are transformed by KO2 into the corresponding thiazolin-2-ones and thiazolin-2-thiones; the same reactions occur with thiamine, whose thiazolin-2-one pyrophosphate has been reported to be a strong inhibitor of pyruvic dehydrogenase.
3-Methylbenzothiazolium salts were allowed to react with superoxide to afford dimeric bis[o-(N-formyl-N-methylamino)phenyl]disulfides and 3-methyl-2-benzothiazolones. The reaction was applied to monocyclic thiazolium salts, and novel ten-membered ring compounds were formed whose structures were elucidated by X-ray crystallographic analysis. These results prompted us to alternative synthesis of the
Thiazolium salts have been investigated, chemically and electrochemically, in order to access to the redox properties of dithiadiazafulvalenes (DTDAF). As these donor molecules are oxygen-sensitive, it is more advisable to isolate them in their oxidized form as dicationic salts. Starting from a tetrathiazolium cation including two precursors groups, linked together with a conjugated spacer, a bis-DTDAF was formed and its electrochemical behavior studied.
4-Thiazoline-2-thiones. I. The Structure of Intermediate 4-Hydoxythiazolidine-2-thiones
作者:W. J. Humphlett、R. W. Lamon
DOI:10.1021/jo01031a008
日期:1964.8
Huenig,S.; Sauer,G., Justus Liebigs Annalen der Chemie, 1971, vol. 748, p. 173 - 188