A FACILE AND UNEXPECTED SYNTHESIS OF TWO NOVEL CONDENSED HETEROCYCLES: 1,1,4,4-TETRAMETHYL-1H,4H-THIENOTHIOPHENE AND 1,1,4,4-TETRAMETHYL-1H,4H-SELENOLOSELENOPHENE

Article abstract of DOI:10.1016/0040-4039(80)80251-6

The title compounds, 5 and 7, have been synthesized by the action of lithium methoxide on γ,γ-dimethylallenyl thiocyanate and selenocyanate, respectively.A multistep mechanism involving bis-γ,γ-dimethylallenyl disulfide or diselenide, as key intermediates, is suggested.