1-Oxides and 1,1-Dioxides of Thiophenes and Selenophenes and Related Compounds

The first topic of the present article involves recent advances in the chemistry of thiophene 1-oxides. Next is the chemistry of the parent thiophene 1,1-dioxide, which is followed by that of congested thiophene 1,1-dioxides, where emphasis is placed on their syntheses and synthetic applications. The chemistry of 1-imino, 1,1-diimino, and 1-imino-1-oxo derivatives of thiophenes is then described. Finally, the newborn chemistry of selenophene 1-oxides and 1,1-dioxides is discussed.